Service Manual

ManualsBrandsCaterpillar ManualsConventionalCAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (49-State) w/ 50-Amp Power Transfer Kit (Interchangeable Breakers)

Place the connecting rod into the piston so that

the longer side of the rod (2) is aligned with the

mark on the piston head (1). Insert through one

side of the piston, through the connecting rod,

and then through the other side of the piston.

Install the piston pin clip (1) into the groove in

the side of the piston. Use long nosed pliers to

rotate the clip in. Do not align the gap with the

cutout (2). Repeat for the other side.

Rings:

The piston rings have a mark next to the gap.

Use a ring puller to install the rings with the mark

facing toward the top of the piston. Make sure

that you install the rings in the proper grooves,

with the oil ring (3) in the lowest groove, the

second ring (2) in the middle groove, and the top

ring (1) in the groove closest to the head of the

piston. The top ring is chrome plated. Make sure

that the rings will move freely in the ring groove.

Stagger the ring gaps so that they are 120°

apart, as shown in the drawing.

Coat the piston, rings, and cylinder wall with

engine oil. Use a ring compressor to push in the

rings and insert the piston into the cylinder.

Make sure that the mark on the piston head (1)

aligns with the lifter mark (2) on the crankcase.

Use a piston driver to push the piston out of the

ring compressor and into the cylinder.

Install the rod caps and rod cap bolts. Tighten

the bolts to 15±1 N·m (11±0.75 lbft).

Spark – Check

Shock/Electrocution Hazard: Do not

operate this

equipment or work on this equipment

unless you

have read and understand the

instructions and

warnings in the Owner’s Manual. Failure to

follow the

instructions or heed the warnings will

result in

serious injury or death.

Make sure that your hands are dry and that you

are not electrically grounded.

To reduce the risk of a flash fire, make sure that

there is no open fuel in the vicinity. Turn the fuel

valve to the off “0” position, and drain the fuel

out of the carburetor.

• Remove the spark plug cap and spark

plug

• Install the spark plug cap onto the spark

plug

• Turn the generator switch to the on “I”

position.

• Hold the spark plug by the spark plug

cap and gently place the threads of the

spark plug against the cylinder head.

• Turn the generator switch to the start

position and hold (no more than 5

seconds) and check for a spark.

• If the spark is weak or if there is no

spark, refer to Spark Plug –

Inspect/Adjust/Replace.

• If the spark plug is not the problem, refer

to Ignition Coil – Test/Adjust.

• Repeat for the second spark plug.