Robin America EH25-2 Specifications download pdf (Page 31)

B-SERIES WALK-BEHIND TROWEL — OPERATION AND PARTS MANUAL — REV. #9 (07/06/10) — PAGE 31

Figure 39. Worn Spider Plate

Trowel Arm adjustment Procedure

NOTE

The following procedure should be followed

to adjust trowel arms when it becomes

apparent that the trowel is finishing poorly or

in need of routine maintenance.

level

, clean area to test the trowel prior to and after is essential.

Any unlevel

spots

in the floor or debris under the trowel blades

will give an incorrect perception of adjustment. Ideally, a 5 x 5"

three-quarter inch thick

flat

steel plate should be used for testing.

1. To determine which blades need adjustment, place the

trowel in the test area (three-quarter inch thick plate) and look

for the following conditions:

■

Pitch the blades as flat as possible and look at the

adjustment bolts

. They should all barely make contact

with the

lower wear plate

on the spider. If you can see

that one of them is not making contact, some adjustment

will be necessary.

■

Is the machine wearing out blades unevenly (i.e. one

blade is completely worn out while the others look new)?

Figure 39 below illustrates a "

worn spider bushings or bent

trowel arms

". Check to see that adjustment bolt is barely

touching (0.10" max. clearance) lower wear plate. All alignment

bolts should be spaced the same distance from the lower wear

plate.

Figure 40 below illustrates the "

correct alignment

" for a spider

plate (as shipped from the factory).

Figure 40. Correct Spider Plate Alignment

At the front of the book (Page 7) there is a “

Daily Pre-Operation

Checklist

”. Make copies of this checklist and use it on a daily

basis.

CAUTION!CAUTION!

CAUTION!

See the engine manual supplied with your

machine for appropriate engine maintenance

schedule and troubleshooting guide for

problems.

NOTE

MAINTENANCE SCHEDULE

Daily (8-10 Hours)

1. Check the oil level in the engine crankcase and gear box,

fill as necessary.

2. Check V-belt.

Weekly (50-60 Hours)

1. Relube arms, thrust collar and clutch

2. Replace blades if necessary.

3. Check and clean or replace the engine air filter as

necessary.

4. Replace engine oil and filter as necessary, see engine

manual.

Monthly (200-300 Hours)

1. Remove, clean, reinstall and relube the arms and thrust

collar. Adjust the blade arms.

2. Remove, clean, reinstall clutch

Yearly (2000-2500 Hours)

1. Check and replace if necessary the arm bushings, thrust

collar bushings and shaft seals.

2. Check pitch control cables for wear.

3. Adjust blade speed.

B-SERIES TROWEL — MAINTENANCE

ALWAYS allow the engine to cool before

servicing. NEVER attempt any maintenance work

on a

hot!

engine.

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Robin America EH25-2 Specifications Page 31

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