5
1) Daily check (before starting)
• Leakage, damage, crack
• Muffler fixing bolts (torque, crack)
• Propeller hub (transformation, fixing bolts/nut)
(P/N: 2629-51410 or 2629-91510, 3544-11510 and 1100-43231)
• Rotor (transformation, play, airgap)
2) Every 25 hours check
• Spark plug (gap, cleaning)
• Cylinder (abrasion)
• Piston/Ring (abrasion)
• Bearing (Gritty)
According to the checks, replace any part if necessary.
The engine can be disassembled or reassembled without any specific difficulties, but be
careful of the following matters;
a.
For disassembling, the special tools shown in the parts list are required in addition to the
general tools. Be sure to use a new gasket when the crankcase and cylinder have been
disassembled.
b. Removing rotor
1. Screw in the stopper (P/N:3350-96220) in place of the spark plug. Then turn the rotor
counterclockwise until the piston touches the stopper. Take care it can cause damage
to the piston or connecting rod if the stopper is not screwed in to the bottom.
2. Loosen and remove the rotor securing nut.
3. Remove the rotor by using the puller (P/N:1490-96101). Do not hit on the crankshaft by
a hammer, that can increase the runout of the shaft.
c. Assembling crankcase
1. Apply grease on the oil seal lips and oil on the bearing.
2. Assemble the crankshaft with a new gasket.
3. When both front and rear crankcases are tightened, the portion of gasket protruding on
the cylinder mounted surface should be cut off with a knife until the gasket becomes
flush with the cylinder mounted surface.
d. Assembling piston
Before assembling the piston, apply the oil on the small end bearing and piston, and set
the piston ensuring that the arrow mark on the top of piston is directed toward the
direction of exhaust port.
e. Assembling cylinder
1. Coat the oil on the inner surface of cylinder.
2. The piston is provided with a knock pin which stops the piston ring from turning. Set the
splitted section of piston ring at the knock pin and assemble the cylinder ensuring not to
break the piston ring.
f. Assembling rotor
Make sure to put lock tight (Medium strength type: TreeBond 1322N, LOCTITE 242,243,
PACER ZAP Z-42) on the rotor fixing nut (P/N:1100-43231).
g. Adjusting air gap of coil.
The air gap of coil should be adjusted to 0.3 mm (0.01").
h. Adjusting ignition time.
This engine with the point-less C.D.I. type requires no adjustments of ignition time.
9. Servicing
