Product Manual

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WARNING

 When testing the spark plug, never hold the high- voltage wire of the spark plug with wet hand.

 Make sure there is no spilled fuel outside the engine and that the spark plug isn’t dipped with fuel.

 To prevent fire, keep sparks for away from the spark plug mount hole.

Once you find any of above problems, contact the authorization entitle to the dealer of the privilege

helps for you.

TROUBLE

CAUSE

REMEDY

1. Poor cylinder compression

 Normal fuel supply system

 Normal ignition system

Piston ring is so worn to over

its wear limit

Replace a set of piston rings

Piston ring is sticking

Clear up carbon fouling

Piston ring is broken

Replace

Spark plug is not installed

tighten or without a gasket

Tighten with a gasket in

Air leakage between cylinder

block and cylinder

Check cylinder gasket and the

flatness of the surface by which

cylinder black on-tacting with

cylinder head; tighten cylinder bolts

in the order to stipulated torque

Air leakage in valve

Check valve clearance and tightness,

repair if necessary