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MAINTENANCE
Caution: Always disconnect spark plug wire and Storage i. ~
place wire ~here it can~ot contact sp~r~ plug to At the end of each mowing season: 'c.- -
prev.ent accl~ental starting when serviCing or . Check engine oil.
making repalr~ to mower. . .. . Drain fuel tank and carburetor by allowing engine
. Sh~t off engine and remove key from Ignition to run until it is out of gas.
switch.
Caution: Do not run engine in an enclosed area.
After First 2 Hours of Operation Do not drain and store gasoline. Dispose of any
. Inspect mower carefully for loose parts. gasoline not used. Gasoline I.oses i.ts ability to.work
. Change engine oil. Use SAE30 weight engine oil. well after a few m.onths! and.lf left In mower will
Use a high quality detergent oil classified "For leave gum deposits which wll.1 clog the fuel system.
Service SC, SO, SE or SF." Detergent oils keep . Fully. charge battery then disconnect both
the engine cleaner and retard the formation of terminal leads and clean.
gum and varnish deposits. . Remove battery from mower. .
- The motor should be warm when draining oil. . Re~ove .spark plug. Pour a small amou!"'t of
-Remove oil drain plug and drain oil completely en!;jlne 011 through the spark plu.g hole Into the
from crankcase. cylinder. Crank slowly with recoil starter to
-Replace drain plug and tighten. distribute oil t~en re.place spar~ plug.
-Add new oil until it reaches full mark on dip- . Clean m?~er Including u.nderslde. Use ~ax to
stick. (Approximately 1 X pints) protect finish. Grass particles. chaff or dirt can
clog the air cooling system. especially after
Before Each Use ~ prolonged service in cutting dry grass or very
. Check engine oil. dirty. air. Continued operation with a clogged
. Check battery acid level. Add water if necessary. cooling system c~n .cause severe overh.eating
Charging battery: and possible engine damage. The drawing shows
-If the battery is allowed to sit up for long the blower ~ousing removed and areas to be
periods of time it may need to be recharged. cleane.d. This should be a regular maintenance
See instructions for this procedure under operation. Done yearly or every 100 hours.
assembly, page 3. whichever comes first.
. Inspect mower before starting. . Greas~ all lubrication points. ('~
. Store In dry place. ',/
E
cvel ry 2~ ~ours Procedure to change the cutting section blade belt "
. ean air filter. on all YR-30 models.
-Remove top of air cleaner and lift out foam filter.
-Clean in detergen~and water solution. 1) Remove rear belt guard at bac~ of mo~er.
-Squeeze dry and replace. 2) Loosen f~o~t belt guard on cuttl!",g sectl~n.
-Check paper filter. Replace if necessary. 3) Remo~e X keeper bolt on cutting section
. Check engine oil. Change engine oil every 25 under Idl~r;, .. .
hours of operation if the engine is operated under 4) Remove X ~ol~ from transml~slon linkage o.n
heavy load. or in high ambient temperature. top of transmiSSion and push linkage rod up Into
Change oil every 50 hours of operation, under seat box area. .
normal operating conditions. 5) ~oosen set screw In belt !iluard collar on larg~
. Check spark plug. 191er located under chassIs at front of transmls-
-Check electrodes for gap using a wire feeler slon. Push belt guard up to allow belt to come
gauge. Gap should be .030". ol;Jt of pulley groov~. . .
-Electrodes should be light brown in color and 6) Disconnect trans.mlsslon safety switch (pull
free from oil or carbon deposits. connector off switch lugs).
-If necessary, replace spark plug. Use L-M plug. 7) Remove belt (part number 205-505).
. Grease wheels. If necessary re-pack bearings. 8) Reverse procedure to replace belt.
. Grease steering linkage and gears. NOTE: Cutting section does not have to be
. Check blade, sharpen or replace if necessary. removed from unit.
Caution: A blade that is bent is dangerous an.d Procedure to change drive belt on all YR-30 models.
must be replaced. An out of balance blade will
cause the mower to vibrate excessively and can 1) Lock parking brake to take tension off belt (even
cause d~mage. Replace or have your dealer if belt is broken or missing).
balance It. 2) Remove X" keeper bolt on clutch idler arm.
. Check and clean blade housing. 3) Remove cutting section belt from rear engine
. Check blade drive belt for wear. If belt shows pulley.
excessive :wear h~v.e your. ~ealer repla<?e it. 4) Sl~p the dr~ve belt off the idler ar.m pulley. !l
. Clean engine. This IS an 'llir c<?oled engine and 5) Slip the drive belt off the transmiSSIon pulley ,I
operates best when cooling fins are clean. Keep and remove.
them free of dust, dirt and oil by cleaning with 6) Reverse the above steps to replace the drive
a stiff bristle brush. belt (part 205-504).
10
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