6-2
TRBL
6
Clean.
Check the carburetor for clogged passages or fuel
overflow.
GOOD
NOT GOOD
Check the compression pressure.
OUT OF
SPECIFICATION
GOOD
Adjust.
Measure the valve clearance.
GOOD
OUT OF
SPECIFICATION
Resurface or replace.
Check the valve face and valve seat for wear.
GOOD
WORN
Remove the spark plug and attach it to the spark
plug cap, and then ground the spark plug to check
for spark.
GOOD SPARK
WEAK OR NO SPARK
Clean or replace.
9
Check the spark plug for dirt and check the
spark plug gap.
9
Check for the voltage leakage due to faulty con-
nection or broken insulation of the high tension
cord.
9
Check the TCI unit connector for corrosion or
faulty connection.
9
Check the ignition system. (Refer to “IGNITION
SYSTEM” on 5-29)
GOOD
NOT GOOD
Replace the TCI unit.
Install a substitute TCI unit to check spark condi-
tions.
GOOD
NOT GOOD
ENGINE
