Multiquip CA4HM User Manual download pdf (Page 31)

CA4HM WALK-BEHIND TROWEL — OPERATION MANUAL — REV. #3 (10/28/10) — PAGE 31

TROUBLESHOOTING

Troubleshooting (Walk-Behind Trowel)

Symptom Possible Problem Solution

Engine running rough or not at all.

Engine ON/OFF Switch in "OFF" position

or malfunctioning?

Make sure that the Engine ON/OFF Switch is ON

or replace switch if necessary.

Centrifugal stop switch malfunction? (if

applicable)

Make sure that the centrifugal stop switch is

functioning when the operator is seated. Replace

switch if necessary.

Fuel?

Look at the fuel system. Make sure there is fuel

being supplied to the engine. Check to ensure that

the fuel ﬁlter is not clogged.

Ignition?

Check to ensure that the ignition switch has power

and is functioning correctly.

Loose wire connections Check wiring. Replace or repair as necessary.

Bad contacts in ON/OFF switch? Replace ON/OFF switch.

Trowel bounces, rolls concrete, or makes

uneven swirls in concrete.

Blades?

Make certain blades are in good condition, not

excessively worn. Finish blades should measure

no less than 2"" (50mm) from the blade bar to

the trailing edge, combo blades should measure

no less that 3.5"" (89mm). Trailing edge of blade

should be straight and parallel to the blade bar.

Pitch adjustment?

Check that all blades are set at the same

pitch angle as measured at the spider. A ﬁeld

adjustment tool is available for height adjustment

of the trowel arms. (Contact Parts Dept.)

Bent trowel arms?

Check the spider assembly for bent trowel arms.

If one of the arms is even slightly bent, replace it

immediately.

Spider?

Check ﬁt of arms in spider. This can be done by

moving the trowel arms up and down. If there is

more than 1/8 inch (3.2 mm) of travel at the tip of

the arm, the spider and arms should be replaced.

Thrust collar?

Check the ﬂatness of the thrust collar by rotating

it on the spider. If it varies by more than 0.02 inch

(0.5 mm) replace the thrust collar.

Thrust collar bushing?

Check the thrust collar by rocking it on the spider.

If it can tilt more than 3/32 inch (2.4 mm) - as

measured at the thrust collar O.D., replace the

thrust collar.

Thrust bearing worn?

Check the thrust bearing to see that it is spinning

freely. Replace if necessary.

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Multiquip CA4HM User Manual Page 31

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