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SECTION 4: GOVERNOR CONTROLS AND

GOVERNOR

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SEcrlON CONTENTS

PAGE

MECHANTCAL

GOVERNOR ........................................... 4 1

GOVERNOR..._..............................................................4-1

GOVERNOR ARM

.......................................................... 4-1

STATIC GOVERNOR ADJUSTMENT ................................ 4-1

DYNAMTC GOVERNOR ADJUSTMENT ......................._.. 4-2

MECHANICAL GOVERNOR

DISASSEf,,IBLE:

1. Drain the oilfrom

the engine.

2. Remove any rust, nicks, or burrs frcm the crankshaft.

3. Remove

the

oil cooler scrcws,

4. Disconned the wia n9 from the oil

pressure

switch-

5. Remove the

governor

lev€r ircm th€ shaft.

Separate the balljoint on the swinqing arm.

7. Remove allofthe crankcase bolts and sllde the crankcase

Note: Watd,

the swinging atm bftcket so that it doesn't

hook on the sheet metal.

8. Discard the crankcase

gasket

& oil

passage

seal.

GOVERNOR

Eoth the

spooland the flyweiqhts

must move

freelyfor the

governor

work

properly.

Check

for

wear on the spool and

flyweights. lf wear is noiiced, change the

governor gear

assembly

(gear

and flyweights),

spool,

and

governor

arm.

Lub

cate all

moving

parts

when

reasserabling.

1. Force

gear

assembly and

governor

spool

off of

governor

shaft.

2. Remove any remainlng

plastic

from the notch in

the

gov-

ernor 5nan.

3. Checkthat allthe

governor

bearing

pans (top

pLile,

oear-

ing,

and bottom

plate)arc

ontheshafi, andthat

! moves

4. Slidethe newgear assemblyand

spoolontothe

governor

shaft. Sllde u

ntil

the

gear

hooks into the notch in

the

gov-

GOVERNOR ARM

lf the

governorarm

does not move frcely,

or ifthe arrn feeh

loose inthe

bushings,

itmay need

rcplacing. lf wea r is notlced,

change the

govdrnor

arm,

governor gear

assembly

(gear

and

flyweights), spool. and bushinqs as needed.

Lubricate all

moving

parts

when reassembling.

1. Remove the e-clips.

2. Sl d€ the arm down and out of the bushings.

Replace any

parts

that appear worn,

Note: The lower

bushing is

a slip fit, and

the upper bush"

Slide the

thrust washer

part

way

onto the new

governor

5. Insert the

governoa

arm in the lower

bushing hoder,

and

slid€

pair

way in.

InstaLl

ower e-clip onthearm, ands ide the

thrust washer

7. Slip the lower

bushing

par!

way

on to the

afm.

Figure 4-2. Govenot Arm Assembly

Figure 4-1. Govemot Geat Assenbly

and Spool

Brand	Generac Power Systems
Model	GTV99O
Category	Engine
Language	English

Generac Power Systems GTV99O User Manual

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Generac Power Systems GTV99O Specifications

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