Yanmar 4JH3-DTE Owner's Manual download pdf (Page 47)

5. Trouble and Troubleshooting

2. Check to see if the emergency bolt is

visible at the back of the bolt hole.

When the emergency bolt is not visible,

insert a turning stick little by little in the

holes at the front side of the V-pulley,

turning it in the direction of the crank

shaft rotation and stopping when the

emergency bolt becomes visible.

3. Inset the emergency bolt tightening tool

into the bolt hole and tighten the

emergency bolt.

4. There are 2 emergency bolts.

Follow the procedure described in 2 and

3 for the second bolt, and tighten the

bolts alternately applying the same

amount of force to each.

(Tightening torque: 19 ~ 01 Nm)

5. Replace the hexagonal bolt.

6. Fill with the clutch oil set aside for

emergencies to the mouth of the filler

port. (When the oil pump is not working,

there is no lubrication and filling with oil

is essential.)

7. Start the engine with the clutch handle

in neutral and proceed at low speed.

Consulting Your Yanmar Dealer or Distributor

Refer difficult problems and repairs to your Yanmar dealer or distributor.

At the time of trouble, check and report the following:

1. Engine model and number:

2. Boat name, material of hull, size (tons):

3. Use, type of fishing done, no. of hours run:

4. Total no. of operation hours (refer to hour metre), age of boat:

5. Condition before trouble (engine rpm, type of operation, load condition, etc.):

6. Details of trouble:

(exhaust colour; sound of engine; does engine start; can engine be turned manually;

type of fuel used; brand and viscosity of lube oil; etc.)

7. Past problems and repairs:

 Turning stick direction  Emergency bolt tightening tool

 Bolt (red)





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Yanmar 4JH3-DTE Owner's Manual Page 47