Reassembly Procedures - Robin America EH025 Service Manual

5-4 REASSEMBLY PROCEDURES

PRECAUTIONS FOR REASSEMBLY
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1) Clean parts thoroughly before reassembly.
Pay most attention to cleanliness of piston, cylinder, crankshaft, connecting rod and bearings.
2) Scrape off all carbon deposits from cylinder head, piston top and piston ring grooves.
3) Check lip of oil seals. Replace oil seal if the lip is damaged. Apply oil to the lip before reassembly.
4) Replace all the gaskets with new ones.
5) Replace keys, pins, bolts, nuts, etc., if necessary.
6) Torque bolts and nuts to specification referring to the "TORQUE SPECIFICATIONS".
7) Apply oil to rotating and sliding portions.
8) Check and adjust clearances and end plays where specified in this manual.
9) Check resistance and/or noise by rotating parts by hand, when reassemble main parts.
5-4-1 CYLINDER BLOCK, VALVE SPRING AND SPRING RETAINER
(1) Before reassemble, apply 4 cycle engine oil
(10W-30) to cylinder inner surface, piston slide
face and valve guide holes.
(2) Install valve spring and spring retainer as
shown in Fig. 5-26. Push spring retainer down
until valve stem comes through the hole of
spring retainer, then slide the spring retainer.
1.INSERT THE
VALVE SPRING
2.SLIDE THE
SPRING RETAINER
SPRING
RETAINER
VALVE
SPRING
Fig. 5-26
SPRING RETAINER
VALVE SPRING
SPACER MOUNTING
POSITION
INTAKE VALVE
- 26 -
SPACER
EXHAUST VALVE
Fig. 5-27