ENGINE
Page G-11
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings.
B
B
All readings should be compared with the engine manu-
factures specification. Engine cylinder specifications are
usually provided for unseated rings. As a general rule,
the compression will increase twenty pounds above the
rated PSI for an engine with seated rings. Compression
readings twenty pounds below the rated PSI indicates
poor cylinder sealing.
Compression Test Readings
Fig. 22 Compression Gauge
a) Indicates 140 psi (965 kPa) (Ref. Fig. 22 on Page
G-11). Compression is good and the engine may
be new or rebuilt. If the engine is new or rebuilt, the
compression will rise to approximately 160 psi
(1100 kPa) as the rings seat. If the engine has had
extensive use, a reading of 140 psi (965 kPa) may
indicate that the engine compression is in decline
and may need to be rebuilt when compression falls
to approximately 125 psi (860 kPa).
b) Indicates 50 - 60 psi (345 - 415 kPa). The rings are
in very bad condition or leaking valves are indi-
cated. Pour approximately one half ounce of thirty
weight oil into the cylinder through the spark plug
hole and recheck. If the compression increases 10
psi (70 kPa) or more the rings are in poor condi-
tion. If little or no increase in compression is indi-
cated, the valves are leaking.
c) Indicates 100 psi (690 kPa). This indication could
be an engine with many hours of use. Adding oil to
the cylinder and rechecking should cause an
increase in compression. If so, a top end overhaul
should be considered. Refer to Engine Rebuild
manual, part number 27615-G01.
ENGINE REMOVAL
Tool List
Qty. Required
Socket, 10 mm, 3/8" drive............................................1
Socket, 12 mm, 3/8" drive............................................1
Socket, 1/2", 3/8" drive ................................................1
Socket, 5/8", 3/8" drive ................................................1
Open end wrench, 9/16" ..............................................2
Open end wrench, 5/16" ..............................................1
Extension 3", 3/8" drive................................................1
Extension 6", 3/8" drive................................................1
Ratchet, 3/8" drive .......................................................1
Straight blade screwdriver ...........................................1
Phillips screwdriver ......................................................1
Side cutters..................................................................1
In the following text, there are references to removing/installing
bolts etc. Additional hardware (nuts, washers etc.) that are
removed must always be installed in their original positions
unless otherwise specified. Non specified torque specifications
are as shown in the table contained in Section “A”.
This operation will remove the engine through the top of the
engine compartment. The weight of the engine exceeds nor-
mal OSHA limits for one person; therefore, a second person or
an engine hoist will be needed to remove the engine. If a hoist
is employed, it will be necessary to remove the suntop.
Safety
To prevent the possibility of personal injury,
disconnect the negative (-) battery cable
before starting engine removal.
Disconnect the negative cable at the battery.
Remove and plug the fuel line at the fuel pump.
Skid Plate Removal
Remove the skid plate by cutting the wire tie that
secures the shift cables to the skid plate and remove the
four bolts (14) that secure the plate to the bottom of the
engine (Ref. Fig. 24 on Page G-13). Do not operate
vehicle without skid plate installed.
A
B
C
0
20
30
40
50
60
70
80 90 100
120
130
140
150
160
170
180
190
PSI
10
PSI
0
10
20
30
40
50
60
70
80 90100
120
130
140
150
160
170
180
190
PSI
PSI
0
20
30
40
50
60
70
80 90 100
120
130
140
150
160
170
180
190
PSI
10
PSI
