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(7). No engine ground wire or ground wire is disconnected
Connect or replace the ground
wire
2.
Engine runs but no spark exists during starting:
Cause
Correction
(1). No fuel in fuel tank
Fuel the tank
(2). No fuel in the carburetor float chamber
Keep trying to start engine
(3). Battery is discharged (engine run slowly)
Recharge or replace battery
(4). Battery wire connector is loosed or corroded
Reconnects or replace battery
(5). Ignition parts is damp or damaged
Replace ignition parts
(6). Ignition part harness is opened, loosed or not energized.
Reconnect or replace harness
(7). Spark plug is burned away, damaged or
Spark plug gap is not correct.
Replace spark plug
(8). Main mechanism is damaged (for example, camshaft)
Check and service
(9). Fuel pump is damaged
Replace pump
(10). Carburetor float chamber needle valve is binding
or oil strainer is blocked
Check, service and clean
(11). Idle cut-off valve does not open
Check circuit and solenoid
3.
Difficult to start for engine when temperature is low:
Cause
Correction
(1). Battery discharged
Recharge battery
(2). Battery connector loosed or corroded
Connect or replace the battery wires.
(3). Spark plug is corroded, damaged or the
Spark plug gap is not right.
Replace spark plug
(4). Other ignition system problems
Check and service
(5). Low cylinder compression pressure
Sent to service spot for check and service
4.
Difficult to start for engine when temperature is high:
Cause
Correction
(1). Air filter is dirty or blocked
Clean air filter core or replace case
(2). Low cylinder compression pressure
Sent to service spot for check and service
