Shindaiwa 357 Service Manual download pdf (Page 60)

Section 6 Clutches

General

A centrifugally engaged two-shoe or three-

shoe clutch is standard on all Shindaiwa

chainsaws (Figure 6.1).

All models use metal shoes that engage to

a drawn steel clutch drum carried on needle

bearings of an open-caged design (Figure

6.2). Shoe retraction on Models 357, 488 and

larger is accomplished with multiple springs

designed to operate under compression rather

than extension.

Some clutch interchangeability exists between

models, but you should always verify that

substitute parts are identical in weight and

dimensions to the components being re-

placed. Clutch spring length, rate, gauge, and

number of coils are critical to overall perfor-

mance and must all be accounted for.

Clutch

Identification

(Figure 6.3)

CLH-57

Figure 6.3 Clutch Systems Used on Shindaiwa Saws

Q Shindaiwa Inc. 1995

60

CLH-59

Figure 6.1 Clutch Shoe Operation

Figure 6.2 Model 757 Clutch System Components

CLH-60

Cupwasher

Rim

Sprocket

Clutch

Drum

Bearing

Grease Passages

Bearing

CLUTCHES

300/300S/360 377 357*, 488, 575, 577, 680, 695

Bearing

Boss “A”

Drum

with Spur

Sprocket

Shoe

Assembly

Boss “B”

Spring

Bearing

Rim

Sprocket

Drum

Shoe

Assembly

Spring

Boss “B”

Rim

Sprocket

Bearing

*Two shoes used on

Model 357

Cover

Drum

Shoes*

Springs

Boss “B”

757

Boss “B’

Shoes

Springs

Boss “A”

Bearing

Drum

Rim

Sprocket

Cup

Washer

E-ring

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