Electric Starting System (Equipped Models); Engine Starts But Stalls - Yamaha MZ360 Service Manual

ELECTRIC STARTING SYSTEM (Equipped models)

ELECTRIC STARTING SYSTEM (Equipped models)
1
The starter motor fails to turn.
2
No.
Check the fuse.
1 (Refer to "CHECKING THE FUSE (Equipped models)" on
3
page 5-8)
4 2 Check the battery (option).
Check the starter motor operation.
5
3 (Refer to "CHECKING THE STARTER MOTOR OPERA-
TION (Equipped models)" on page 5-14)
Check the starter motor.
6
4
(Refer to "ELECTRIC STARTING SYSTEM" on page 5-15)
5 Check the engine switch.
7
Check the entire starting system's wiring.
6
(Refer to "CIRCUIT DIAGRAM" on page 5-1)
8
7 The starting system circuit is OK.
9

ENGINE STARTS BUT STALLS

10
No.
1 Check the fuel level.
2 Check if the fuel cock is clogged.
3 Check if the fuel hoses is clogged.
Check if there is air suction from the carburetor joint, gas-
4
ket, or throttle shaft.
Check the compression pressure.
5 (Refer to "MEASURING THE COMPRESSION PRES-
SURE" on page 3-1)
Check the valve clearance.
6 (Refer to "ADJUSTING THE VALVE CLEARANCE" on
page 2-12)
Check if there is seizure, wear, or damage on the piston,
piston ring, or cylinder.
7
(Refer to "PISTON, CAMSHAFT, CRANKCASE, AND
CRANKSHAFT" on page 3-44)
8 Check the TCI unit air gap.
Checking steps
Checking steps
6-2
Possible remedy
Replace the fuse.
• Clean the battery terminals.
• Recharge or replace the battery.
If the starter motor operates normally,
the starter motor is OK.
Repair or replace the starter motor.
Replace the engine switch.
Properly connect or repair the starting
system's wiring.
—
Possible remedy
Add the fuel if it is insufficient.
Clean.
Clean.
• Tighten the carburetor nuts securely.
• Replace the carburetor joint or gasket
with a new one.
Too high: 
Decarbonize the combustion chamber if
there is carbon deposits.
Too low: 
Next checking steps.
Adjust the valve clearance.
Rebore or replace.
Adjust.