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16. MAINTENANCE
Checking the brake fluid level
Insufficient brake fluid may let air enter
the brake system, possibly causing the
brakes to become ineffective. Before
riding, check that the brake fluid is above
the minimum level mark and replenish if
necessary. A low brake fluid level may
indicate worn brake pads and/or brake
system leakage. If the brake fluid level is
low, be sure to check the brake pads for
wear and the brake system for leakage.
The brake fluid reservoir is on the back of brake pedal.
When checking the fluid level, make sure the top of the brake fluid
reservoir is level.
Use only the recommended quality brake fluid. Otherwise, the
rubber seals may deteriorate, causing leakage and poor braking
performance.
Refill with the same type of brake fluid. Mixing fluids may result in a
harmful chemical reaction and lead to poor braking performance.
Be careful that water does not enter the brake fluid reservoir when
refilling. Water will significantly lower the boiling point of the fluid
and may result in vapor lock.
Brake fluid may deteriorate painted surfaces or plastic parts. Always
clean up spilled fluid immediately.
Have an authorized dealer inspect the brake system if the brake
fluid level goes down.
T-Boss550 OWNER'S/OPERATOR'S MANUAL 18.1
Recommended brake fluid: DOT 3
16- 13
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Questions and answers
My 550 t boss won't start in the cold. It barks back through the intake, every time it should fire.
The Massimo T-BOSS 550 has difficulty starting in extremely cold weather. The possible reasons mentioned include:
1. Weak Starter – The starter may not be strong enough to turn the engine over efficiently in cold conditions.
2. Battery Issues – The battery may not have enough cold cranking amps to provide sufficient power in low temperatures.
3. Lack of Battery Maintainer – The battery is not maintained with a charger, which could lead to reduced performance in the cold.
4. Cold Temperatures – The engine struggles to start only in extremely low temperatures, especially in single digits, and the vehicle is not stored in a garage, which could help with temperature regulation.
The backfiring through the intake could be caused by:
1. Cold Fuel Mixture – In cold weather, fuel may not vaporize properly, leading to incomplete combustion and backfiring.
2. Weak Spark or Ignition Timing Issues – A weak battery or cold conditions may cause weak spark ignition, leading to misfires and backfires.
3. Starter Struggles – If the starter is weak, the engine may not crank properly, leading to improper air-fuel mixture ignition.
Using a battery maintainer, storing the vehicle in a warmer place, or checking the starter and battery capacity could help improve cold-weather performance.
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Transmission slipping on 550 Massimo atv