Massimo MSU 400: Parts, Engine, Oil Filter, Accessories, Oil Capacity, Problems, Transmission-Guide

Massimo MSU 400: Parts, Engine, Oil Filter, Accessories, Oil Capacity, Problems, Transmission-Guide

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The Massimo MSU 400 is a tough side-by-side with a 397cc single-cylinder engine, producing 25 horsepower for work and fun. Priced at $6,000–$7,500, it offers selectable 2WD/4WD, a 1000-pound towing capacity, and a dump bed. Made by Massimo Motor Sports, it competes with the Hisun 400 ($6,000) and Coleman UT400 ($5,500).

It has an 11.8-inch ground clearance, 25-inch tires, and standard extras like a 2500-pound winch. The liquid-cooled carbureted engine runs reliably, and the CVT transmission shifts smoothly. This guide covers parts, engine details, oil filter, accessories, oil capacity, problems, transmission, and care tips, helping owners keep it running well, if checked every 500 miles.

What Are the Specifications of the Massimo MSU 400?

What Are the Specifications of the Massimo MSU 400?

The Massimo MSU 400 specifications allow work and off-road fun:

  1. Size: 104 x 56 x 74 inches, making it compact.
  2. Clearance: 11.8 inches, good for light trails.
  3. Load Capacity: 400 pounds, holding two people and cargo.
  4. Fuel Tank: 6.3 gallons, giving a 120–150-mile range.
  5. Seat Height: 32 inches, easy to climb into.
  6. Weight: 1197 pounds, balancing control.
  7. Tires: 25×8-12 front and rear, 12 PSI.
  8. Brakes: Hydraulic disc, front and rear.
  9. Suspension: Double A-arms, front and rear, fully changeable.
  10. Top Speed: 40 mph, dropping to 25 mph on rough terrain.

These specs are similar to the Hisun 400, allowing shared parts. The 397cc engine handles light jobs, if cared for every 500 miles.

What Is the Engine of the Massimo MSU 400?

What Is the Engine of the Massimo MSU 400?

The Massimo MSU 400 has a 397cc single-cylinder, four-stroke, SOHC engine, making 25 horsepower at 6000 RPM. The 84mm x 71.5mm bore and stroke and 9.2:1 compression ratio help 1000-pound towing. The liquid-cooled carbureted system keeps it cool, giving 25 ft-lbs torque at 3500 RPM.

It reaches 40 mph, slowing to 25 mph on hills. It meets EPA rules, cutting emissions. This is like the Coleman UT400, staying reliable, if checked every 500 miles.

What Are the Features of the Massimo MSU 400 Engine?

The Massimo MSU 400 engine gives 25 horsepower with a 397cc single-cylinder, four-stroke build. Key features include:

  1. Single-Cylinder: Makes 25 horsepower, great for work tasks.
  2. Four-Stroke Cycle: Follows EPA rules, lowering emissions.
  3. Liquid Cooling: Stops overheating, keeping power steady.
  4. Carburetor System: Gives fuel with a 32mm Mikuni-style unit.
  5. Compression Ratio: 9.2:1, helping reach 40 mph.
  6. CDI Ignition: Keeps timing steady on all terrains.
  7. SOHC: Improves efficiency, adding durability.
  8. Oil Capacity: 1.9–2.1 quarts of 10W-40, keeping parts lubricated.
  9. Fuel System: 10-micron filter helps carburetor.
  10. Exhaust: Catalytic converter cuts emissions, resists rust.

These features are similar to the Hisun 400, giving steady performance, if cared for regularly.

What Are the Common Problems with the Massimo MSU 400 Engine?

What Are the Common Problems with the Massimo MSU 400 Engine?

The Massimo MSU 400 engine has ten common problems, needing regular care:

  1. Overheating: Dirty radiator fins raise temperatures.
  2. Carburetor Clogs: Bad fuel causes starting issues.
  3. Vibration: Single-cylinder shakes at high RPMs.
  4. Oil Leaks: Seals wear out, losing oil after 1000 miles.
  5. Weak Power: 25-horsepower struggles with heavy loads.
  6. Starter Issues: CDI fails in cold weather, stopping starts.
  7. Piston Wear: 84mm piston wears without oil changes.
  8. Fuel Pump Trouble: Ethanol damages fuel flow.
  9. Loud Exhaust: Muffler silencer breaks, making noise.
  10. Slow Throttle: Carburetor lags, slowing acceleration.

These need Hisun 400-shared parts like carburetors ($20). Care is like Coleman UT400 reliability.

How Can Owners Fix Engine Problems in the Massimo MSU 400?

Owners fix Massimo MSU 400 engine problems with ten steps:

  1. Stop Overheating: Clean radiator fins monthly ($10).
  2. Clean Fuel System: Replace fuel filter every 500 miles ($10).
  3. Reduce Vibration: Tighten mounts every 500 miles with pads ($15).
  4. Fix Oil Leaks: Replace seals every 1000 miles ($10).
  5. Boost Power: Tune carburetor yearly for 25 horsepower ($20).
  6. Fix Starter: Check CDI every 1000 miles, replacing ($40).
  7. Protect Piston: Change oil every 500 miles with 10W-40 ($10).
  8. Replace Fuel Pump: Clean tank yearly, replacing pump ($50).
  9. Quiet Exhaust: Check muffler every 500 miles ($90).
  10. Fix Throttle Lag: Clean carburetor every 1000 miles ($10).

These use Bennche 400-shared parts, keeping it reliable, if done often.

What Are the Parts of the Massimo MSU 400?

What Are the Parts of the Massimo MSU 400?

The Massimo MSU 400 has ten main part categories:

  1. Piston Kit: Works with 397cc engine, $45.
  2. CVT Belt: Keeps transmission smooth, $35.
  3. Brake Pads: Stops vehicle, $20.
  4. Oil Filter: Protects engine, $8–$10.
  5. Fuel Filter: Stops carburetor clogs, $8.
  6. Tires: 25×8-12 front and rear, $100 each.
  7. Battery: 12V, 18Ah, powers systems, $50.
  8. Winch Cable: Works with 2500-pound winch, $20.
  9. A-Arms: Improve suspension, $80 per pair.
  10. Ignition Coil: Sparks engine, $35.

These are like Hisun 400 parts, saving money, if bought from massimomotor.com or Amazon.

Where Can Owners Find the Massimo MSU 400 Parts Diagram?

The Massimo MSU 400 parts diagram is found at Massimo Motor Sports or HisunPartsCentral. It shows:

  1. Engine Diagram: Piston (#17114050110), oil filter mount.
  2. Transmission Diagram: CVT belt, clutch weights (#30).
  3. Chassis Diagram: A-arms, shock mounts.
  4. Electrical Diagram: Battery, CDI connections.

Download from manualslib.com, similar to Coleman UT400, to help with fixes, if kept handy.

What Is the Oil Filter for the Massimo MSU 400?

The Massimo MSU 400 uses a spin-on oil filter with a 10-micron rating, part number 15200-003-0000. It costs $8–$10 and protects the 397cc engine from dirt. Replace every 500 miles, like the Hisun 400, to keep the engine healthy.

What Is the Oil Filter Cross-Reference for the Massimo MSU 400?

The Massimo MSU 400 oil filter matches five other filters:

  1. Fram PH6017A: Fits 397cc engine, $8–$10.
  2. K&N HP-7009: Allows high flow, $9–$12.
  3. WIX 51356: Fits thread size, $8–$10.
  4. Purolator PL10241: Keeps oil flowing, $7–$9.
  5. Mobil 1 M1-110A: Handles heat, $10–$12.

These are like Bennche 400, keeping engine oil clean, if changed every 500 miles.

What Is the Oil Capacity of the Massimo MSU 400?

What Is the Oil Capacity of the Massimo MSU 400?

The Massimo MSU 400 holds 1.9–2.1 quarts of 10W-40 synthetic blend oil for its 397cc engine. This lubricates the 84mm piston, helping 25 horsepower. Change oil every 500 miles, like the Hisun 400, to keep the engine strong.

What Are the Accessories for the Massimo MSU 400?

The Massimo MSU 400 works with ten accessories for better use:

  1. Winch: 2500-pound pull, $150, for stuck vehicles.
  2. Windshield: Half plastic, $80, blocks debris.
  3. Roof: Soft fabric, $150, keeps out rain.
  4. Bumper: Steel front, $120, takes hits.
  5. Hitch: 2-inch, $40, hooks trailers.
  6. Bed Mat: Rubber, $60, saves bed.
  7. Spotlights: Halogen pair, $30, brightens paths.
  8. Tires: 25×8-12 all-terrain, $300 for set, for grip.
  9. Skid Plates: Guards bottom, $100.
  10. Better Exhaust: Adds power, $100.

These are like Coleman UT400, making it more useful, if added correctly.

What Are the Common Problems with Massimo MSU 400 Accessories?

Massimo MSU 400 accessories have ten problems:

  1. Winch Stops: Cables break, weakening pull.
  2. Windshield Cracks: Rocks cause breaks, blocking view.
  3. Roof Shakes: Loose bolts make noise.
  4. Bumper Dents: Hits damage steel, losing protection.
  5. Hitch Wear: Wears under heavy towing.
  6. Bed Mat Tears: Heavy loads rip rubber.
  7. Spotlight Failure: Bulbs burn out, dimming light.
  8. Tire Wear: New tires wear unevenly without alignment.
  9. Skid Plate Dents: Hits damage plates, losing protection.
  10. Exhaust Noise: New exhaust gets too loud.

These need Hisun 400-shared parts, like Bennche 400 reliability, if fixed often.

How Can Owners Keep Accessories Working on the Massimo MSU 400?

Owners keep Massimo MSU 400 accessories working with ten steps:

  1. Check Winch: Look at cables every 500 miles, replacing ($20).
  2. Clean Windshield: Use anti-fog cleaner weekly ($5).
  3. Tighten Roof: Fix bolts every 500 miles ($5).
  4. Check Bumper: Inspect for dents every 500 miles ($10).
  5. Fix Hitch: Check wear yearly ($10).
  6. Replace Bed Mat: Swap torn mat yearly ($60).
  7. Replace Spotlights: Change bulbs every 2 years ($15).
  8. Rotate Tires: Move tires every 1000 miles to save wear ($10).
  9. Check Skid Plates: Look for dents every 500 miles ($20).
  10. Check Exhaust: Look at silencer yearly ($90).

These use MSU 400-shared parts, keeping things reliable, if done regularly.

What Are the Common Problems with the Massimo MSU 400?

What Are the Common Problems with the Massimo MSU 400?

The Massimo MSU 400 has ten common problems, needing regular care:

  1. Electrical Shorts: Rusty wires cause dim lights or no start.
  2. Carburetor Clogs: Bad fuel stops engine.
  3. Transmission Grinding: Low fluid causes rough shifts.
  4. Overheating: Dirty radiator raises engine heat.
  5. Brake Fade: Worn pads weaken stopping.
  6. Vibration: Loose mounts shake at high RPMs.
  7. Fuel Pump Failure: Ethanol clogs pump, cutting flow.
  8. Slow Speed: Belt slips, reducing power.
  9. Suspension Squeaks: Bushings squeak without grease.
  10. Oil Pressure Drop: Dirty filter lowers pressure.

These need Coleman UT400-shared parts like belts ($35). Care is like Hisun 400 reliability.

How Can Owners Fix Problems in the Massimo MSU 400?

How Can Owners Fix Problems in the Massimo MSU 400?

Owners fix Massimo MSU 400 problems with ten steps:

  1. Fix Electrical Shorts: Clean wires with brush ($5), replace ($60).
  2. Clean Carburetor: Use $20 kit every 1000 miles.
  3. Stop Grinding: Add 1.5 quarts Dexron III ATF ($15).
  4. Stop Overheating: Clean radiator fins ($0), add fan switch ($15).
  5. Fix Brakes: Replace pads ($20), add fluid ($5).
  6. Reduce Vibration: Tighten mounts at 35 ft-lbs ($0).
  7. Replace Fuel Pump: Add $8 filter, check 5 PSI.
  8. Boost Speed: Replace belt ($35), clean pulleys.
  9. Stop Squeaks: Grease bushings every 500 miles ($5).
  10. Fix Oil Pressure: Change filter every 500 miles ($8).

These use Bennche 400-shared parts, keeping it reliable, if done often.

What Is the Transmission System of the Massimo MSU 400?

What Is the Transmission System of the Massimo MSU 400?

The Massimo MSU 400 has a CVT transmission with a shaft-driven system and wet clutch. It has low, high, neutral, and reverse settings, sending 25 horsepower to 25-inch tires. The selectable 2WD/4WD boosts grip.

It reaches 40 mph and pulls 1000 pounds, held steady by 11.8-inch clearance. The clutch kit keeps shifts smooth, and the shaft drive needs less care. This is like the Hisun 400, working well, if checked every 500 miles.

What Are the Common Transmission Problems in the Massimo MSU 400?

The Massimo MSU 400 transmission has ten problems:

  1. CVT Belt Slips: Slips under 1000-pound loads, losing power.
  2. Shaft Wear: Wears out, cutting power.
  3. Clutch Wear: Wears, making shifts rough.
  4. Overheating: Heats up from low fluid levels.
  5. Fluid Leaks: Case leaks, dropping fluid.
  6. Slow Shifting: Worn parts delay shifts.
  7. Grinding Noise: Shaft drive grinds, showing wear.
  8. Power Loss: Doesn’t send full power.
  9. Vibration: Drivetrain shakes, reducing comfort.
  10. Belt Wear: CVT belt wears out without care.

These need Bennche 400-shared parts like belts ($35). Care is like Coleman UT400 reliability.

How Can Owners Keep the Transmission of the Massimo MSU 400 Working?

Owners keep the Massimo MSU 400 transmission working with ten steps:

  1. Check CVT Belt: Look every 500 miles, replacing worn belts ($35).
  2. Add Fluid: Use Dexron III ATF monthly ($15).
  3. Replace Clutch Kit: Put in new kit every 2000 miles ($80).
  4. Check Fluid Levels: Look at ATF monthly ($10).
  5. Fix Leaks: Replace seals every 1500 miles ($10).
  6. Fix Shifting: Tune CVT every 1000 miles per manual.
  7. Stop Grinding Noise: Check shaft drive every 500 miles ($50).
  8. Boost Power: Clean transmission yearly.
  9. Reduce Vibration: Tighten parts every 500 miles ($5).
  10. Fix Belt Tension: Change tension every 1000 miles.

These use Hisun 400-shared parts, keeping it reliable, if towing often.

What Are the Electrical Parts of the Massimo MSU 400?

What Are the Electrical Parts of the Massimo MSU 400?

The Massimo MSU 400 electrical system has ten parts:

  1. Battery: 12V, 18Ah, powers ignition and lights.
  2. Starter Motor: Starts engine, using 200 amps.
  3. Alternator: Charges battery, giving 12 amps.
  4. Wiring: Connects parts, helping power flow.
  5. Ignition Switch: Turns system on, starting engine.
  6. LED Headlights: Light up paths.
  7. Circuit Breaker: Stops circuit overloads.
  8. Sensors: Watch engine performance.
  9. Digital Dash: Shows speed, fuel, and diagnostics.
  10. Winch Switch: Runs 2500-pound winch.

These are like Bennche 400, staying reliable, if checked every 500 miles.

What Are the Common Electrical Problems in the Massimo MSU 400?

The Massimo MSU 400 electrical system has ten problems:

  1. Battery Failure: Stops working after 2 years, preventing starts.
  2. Starter Issues: Motor fails in cold weather.
  3. Wiring Breaks: Wires wear, causing shorts.
  4. Alternator Failure: Stops charging, draining battery.
  5. Headlight Failure: LED bulbs burn out, dimming light.
  6. Breaker Trips: Trips from too many accessories.
  7. Sensor Issues: Give wrong readings, hurting performance.
  8. Dash Problems: Digital display stops working.
  9. Winch Switch Failure: Stops winch from working.
  10. Ignition Switch Failure: Stops starts, needing replacement.

These need Hisun 400-shared parts, like Coleman UT400 reliability.

How Can Owners Keep the Electrical System of the Massimo MSU 400 Working?

Owners keep the electrical system working with ten steps:

  1. Check Battery: Test every 500 miles, replacing every 2 years ($50).
  2. Look at Starter: Test yearly, replacing ($40).
  3. Check Wiring: Look every 500 miles for breaks ($5).
  4. Test Alternator: Check output weekly, giving 12 amps.
  5. Replace Headlights: Change LED bulbs every 2 years ($15).
  6. Check Breakers: Look at breaker box every 500 miles, replacing ($5).
  7. Test Sensors: Check readings yearly ($10).
  8. Fix Dash: Check connections yearly ($10).
  9. Check Winch Switch: Test every 500 miles, replacing ($20).
  10. Look at Ignition Switch: Test yearly, replacing ($10).

These use MSU 400-shared parts, keeping things reliable, if checked often.

What Are the Suspension Features of the Massimo MSU 400?

The Massimo MSU 400 suspension has ten features:

  1. Double A-Arms: Front and rear, changeable for load.
  2. Shock Absorbers: Soak up bumps from rough terrain.
  3. Clearance: 11.8 inches to clear obstacles.
  4. Rust Protection: Coating fights corrosion in wet areas.
  5. Tire Fit: Works with 25-inch tires for grip.
  6. Load Capacity: Holds 400-pound loads.
  7. Towing Capacity: Pulls 1000 pounds without strain.
  8. Durability: Handles light trails, like Hisun models.
  9. Stability: Stays steady on hills.
  10. Changeability: Shocks change for rider weight.

These give stability, like Coleman UT400, if checked every 500 miles.

What Are the Common Suspension Problems in the Massimo MSU 400?

The Massimo MSU 400 suspension has ten problems:

  1. Shock Wear: Wears under heavy loads, reducing comfort.
  2. Alignment Issues: A-arms shift, wearing tires.
  3. Rust: Coating wears off, causing rust.
  4. Squeaking: Bushings squeak without grease.
  5. Lower Clearance: Suspension sags, cutting 11.8-inch clearance.
  6. Change Failure: Shocks won’t lock, causing uneven rides.
  7. Tire Stress: Bigger tires strain suspension.
  8. Towing Wear: Wears when pulling 1000 pounds.
  9. Part Wear: Parts wear on rough terrain.
  10. Stability Issues: Wobbles on steep hills.

These need Bennche 400-shared parts, like Hisun 400 reliability.

How Can Owners Keep the Suspension of the Massimo MSU 400 Working?

Owners keep the suspension working with ten steps:

  1. Check Shocks: Look every 500 miles, replacing leaks ($50).
  2. Fix Alignment: Realign A-arms every 1000 miles ($10).
  3. Add Coating: Reapply coating yearly ($10).
  4. Grease Bushings: Grease every 500 miles ($5).
  5. Check Clearance: Measure weekly to confirm 11.8 inches.
  6. Change Shocks: Test every 500 miles for steadiness.
  7. Check Tires: Make sure tire size fits to avoid stress.
  8. Limit Towing: Keep towing under 800 pounds to reduce wear.
  9. Replace Parts: Check every 500 miles, replacing ($50).
  10. Test Stability: Check on hills every 500 miles.

These use MSU 400-shared parts, keeping things reliable, if done often.

How Does the Massimo MSU 400 Compare to Other Massimo Models?

How Does the Massimo MSU 400 Compare to Other Massimo Models?

The Massimo MSU 400 offers balanced power compared to five Massimo models:

  1. T-Boss 410: 352cc engine, 25.5 horsepower, $7,999, shares oil filters.
  2. Buck 450: 352cc engine, 25 horsepower, $7,999, shares brake pads.
  3. T-Boss 560: 493cc engine, 33 horsepower, $9,999, shares CVT belts.
  4. MSU 600: 600cc engine, 30 horsepower, $8,500, shares fuel filters.
  5. MSU 850: 800cc engine, 59 horsepower, $9,999, shares winch cables.

The MSU 400 is lighter than MSU 600, good for tight trails.

How Does the Massimo MSU 400 Compare to Other UTV Brands?

The Massimo MSU 400 compares to five other UTVs:

  1. Hisun 400: 400cc, 25 horsepower, $6,000, shares CVT belts.
  2. Coleman UT400: 390cc, 23 horsepower, $5,500, shares brake pads.
  3. Bennche 400: 392cc, 24 horsepower, $5,800, shares fuel filters.
  4. CFMoto UForce 500: 495cc, 38 horsepower, $8,999, shares oil filters.
  5. Kawasaki Mule SX: 401cc, 21 horsepower, $8,199, shares air filters.

The MSU 400 gives good value, like Hisun 400, if thinking on price.

FeatureMassimo MSU 400Hisun 400Coleman UT400
Horsepower252523
Weight1197 lbs1150 lbs1100 lbs
Price$6,500$6,000$5,500
ExtrasWinchBasicBasic

What Are the Common Overheating Problems in the Massimo MSU 400?

The Massimo MSU 400 has five overheating problems:

  1. Dirty Radiator Fins: Dirt blocks airflow, raising heat.
  2. Low Coolant: Coolant runs low, cutting cooling.
  3. High RPMs: Long runs build up heat.
  4. Hot Weather: Extreme heat stresses the system.
  5. Heavy Loads: 1000-pound towing adds heat.

Clean radiator fins monthly and check coolant every 500 miles, like Coleman UT400, to stop overheating.

How Can Owners Fix Overheating Problems in the Massimo MSU 400?

Owners fix overheating with five steps:

  1. Clean Radiator Fins: Clear dirt monthly ($10).
  2. Check Coolant: Look weekly, adding more ($10).
  3. Watch RPMs: Avoid long high RPMs.
  4. Reduce Loads: Limit towing to 800 pounds in heat.
  5. Check Temperature: Watch gauges daily in hot weather.

These use Hisun 400-shared parts, keeping it reliable, if done often.