Maintenance - Hitachi Koki Tanaka TEA-500 Mode D'emploi

Maintenance

1. Periodical check
1) Clean the air cleaner element with soap and water and dry
before reuse. (Fig. 9)
(1) Air cleaner cover
(2) Pull to remove air Cleaner cover
(3) Air cleaner element
2) Scrape off the carbon from the spark plug gap. (Standard gap
is 0.60 mm or 0.023 in.) (Fig.10)
(4) 0.60 mm
.023 in
(5) Remove carbon or oil
3) Inspect carefully for any fuel or oil leaks.
4) Check all nuts, bolts, screws, etc. making sure they are
tightened.
5) Since the clutch shoes will wear after a long period of use, it
should be checked occasionally.
2. Lubrication
1) Lubricate gear case by pumping multi-purpose grease through
grease fitting every 50 hours of operation. (Fig. 11)
(6) Grease fitting
2) Engine speed governor is lubricated with # 30 weight oil (EP
lithum). The capacity is 0.5 fl.oz. (16ml) and should be checked
every 50 hours of use at the level check screw. (Fig. 12)
(7) Level check screw
When unscrewing the check screw, keep the screw side up.
3. Governor adjustment
1) Frist with the engine off, loosen screw A (1).
Pull up governor outer lever (2) and push down governor spring
lever (3), then at the same time retighten the screw A (Fig. 12B)
NOTE:
After above procedure, make sure the throttle (4) on the
carburetor gets either of the idle position or the full open
position.
2) To adjust governor, loosen screws (6) which holds control lever
assembly (5) to crankcase and move the assembly left or right
to obtain the maximum speed of 6500 rpm (Moving control
lever assembly to left gives higher rpm and moving to right,
lower rpm) (Fig. 12C)
NOTE:
Always adjust throttle wire end play before governor
adjustment.
CAUTION:
GB-8
Do not adjust to run more than 6500 rpm.
3) Governor hunting (Varying rpm)
• Hunting occurs with insufficient warm up of engine.
• When the governor spring, governor rod or governor rod spring
moves improperly, hunting may occur. Check and clean.
• If governor rod spring becomes stretched, hunting may occur.
Handle with care or replace.
• If the gosoline and oil mix ratio is not correct, hunting may
occur. Ratio should be from 25:1 to 50:1.
• When fuel tank or petcock is clogged with dirt or old fuel,
hunting may occur. Check and clean.
• When there is insufficient oil in the governor, the weights will not
operate properly, resulting in hunting.
Check and refill with gear oil.
• If the high speed screw on the carburetor is improperly adjusted,
hunting may occur. Adjust properly.
4. Other features
1) By folding the handle bars upward, they can be used as a
carrying handle. (Fig. 13)
2) By folding the handle downward, they become a stand for
storage. (Fig. 14)
5. Maintenance schedule
Below you will find some general maintenance instructions. For
further information please contact Tanaka dealer.
Daily maintenance
• Clean the exterior of the unit.
• Check that the drilling attachment is properly centred, sharp,
and without cracks. An offcentred bit induces heavy vibrations
that may damage the unit.
• Chock that the drilling attachment is sufficiently tightened.
• Check that nuts and screws are sufficiently tightened.
Weekly maintenance
• Check the starter, especially cord.
• Clean the exterior of the spark plug.
• Remove the spark plug and check the electrode gap. Adjust it
to 0.6 mm or change the spark plug.
• Check that the air intake at the starter is not clogged.
• Check that the angle gear is filled with grease up to 3/4.
• Clean the air filter.
Monthly maintenance
• Rinse the fuel tank with gasoline, and clean fuel filter.
• Clean the exterior of the carburetor and the space around it.
Quarterly maintenance
• Clean the cooling fins on the cylinder.
• Clean the fan and the space around it.
• Clean the muffler of carbon.
CAUTION
Clning of cylinder fins, fan and muffler shall be done by a Tanaka
dealer.