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LUBRICATION 

CAUTION: DISCONNECT SPARK
PLUG WIRE BEFORE SERVICING.

WHEELS

 - If your mower is equipped with

ball bear ing wheels, lu bri cate at least once a 
sea son with a light oil, all other types re quire 
no lu bri ca tion. How ever, if the wheels are re -
moved for any rea son, lu bri cate the sur face
of the axle bolt and the in ner sur face of the
wheel with light au to mo tive oil.

ENGINE

 - Fol low en gine man ual for lu bri ca tion

in struc tions.

BLADE CON 

TROL

 - Lu 

bri 

cate the pivot points

on the blade con trol han dle and the brake ca ble 
at least once a sea son with light oil. The blade
con trol must op er ate freely in both di rec tions. 

TRANS MIS SION

 - The trans 

mis 

sion is

pre-lu 

bri 

cated and sealed at the fac 

tory. It

does not re 

quire check 

ing. If dis 

as 

sem 

bled

for any rea son, fill with 2 ounces of Alvania
grease, part num ber 737-0168. 

MAINTENANCE

For best re sults your blade should be sharp.
The blade may be resharpened by re mov ing 
it and ei 

ther grind 

ing or fil 

ing the cut 

ting

edge keep ing as close to the orig i nal bevel
as  pos si ble.

Im proper blade bal ance will re sult in ex ces -
sive  vi bra tion  caus ing  even tual  dam age  to
the en 

gine and mower. Be sure to care 

fully

bal ance  blade  af ter  sharp en ing.

Af 

ter pro 

longed use, es 

pe 

cially in sandy soil

con 

di 

tions, the blade will be 

come worn and

lose some of the orig 

nal shape. Cut 

ting ef 

fi 

-

ciency will be re duced and the blade should
be re placed. Re place with an ap proved fac tory 

re place ment  blade  only.  Pos si ble  dam age  re -
sult ing from blade un bal ance con di tion is not
the  re spon si bil ity  of  the  man u fac turer.

ENGINE

Re 

fer to the sep 

rate en 

gine man 

ual for en 

-

gine  main te nance  in struc tions. 

Main tain 

en gine  oil

 as in structed in the sep a -

rate en 

gine man 

ual packed with your unit.

Read and fol low in struc tions care fully. 

Un der  nor mal  con di tions  ser vice 

air cleaner

as in structed in the sep a rate en gine  man ual 
packed with your unit.   Clean ev 

ery few

hours un 

der ex 

tremely dusty con 

di 

tions.

Poor en gine per for mance and flood ing usu -
ally in di cates that the air cleaner should be
ser viced.

The 

spark plug

 should be cleaned and the

gap re set once a sea son.  Spark plug re place -
ment is rec 

om 

mended at the start of each

mow ing sea son; check en gine man ual for cor -
rect plug type and gap spec i fi ca tions. 

NOTE:

 This spark ig ni tion sys tem meets

all  re quire ments  of  the  Ca na dian  In ter fer -
ence-Causing  Equip ment  Reg u la tions.

Clean the en 

gine reg 

larly with a cloth or

brush. Keep the cool ing sys tem (blower hous -
ing area) clean to per mit proper air cir cu la tion
which is es sen tial to en gine per for mance and
life. Be cer 

tain to re 

move all grass, dirt and

com bus ti ble  de bris  from  muf fler  area.

DECK

The un der side of the mower deck should be
cleaned af ter each use to pre vent a buildup of
grass clip pings, leaves, dirt or other mat ter. If
this de bris is al lowed to ac cu mu late, it will in -
vite rust and cor 

ro 

sion, and may pre 

vent

proper mulch ing. 

The deck may be cleaned by tilt ing the mower 
and scrap ing clean with a suit able tool (make
cer tain the spark plug wire is dis con nected).

CUTTING BLADE

WARNING: Be sure to dis 

con 

nect

and ground the spark plug wire and
re move  ig ni tion  key  be fore  work ing
on the cut ting blade to pre vent ac ci -
den tal  en gine  start ing.  Pro tect  hands
by us 

ing heavy gloves or a rag to

grasp the cut ting blade. 

Tip mower as spec 

fied in sep 

rate en 

gine

man ual. If it is not spec i fied tip with car bu re tor
up.

13

Fig ure  16

Hex Nut

Adjustable

Cable Bracket

Six Speed
Cable

Summary of Contents for OG-4905

Page 1: ...Owner s Manual SET UP OPERATION MAINTENANCE IMPORTANT Read Safety Rules and Instructions Carefully PRINTED IN CANADA OG 4905...

Page 2: ...Please have your model number and serial number ready when you call NOTE Although both numbers are important you will be asked to enter only your serial number before your call can be processed For mo...

Page 3: ...used by slipping or tripping Do not hold on to the mower if you are falling release the handle immediately Never pull the mower back toward you while you are walking If you must back the mower away fr...

Page 4: ...art of this manual to measure slopes before operating this unit on a sloped or hilly area If the slope is greater than 15 degrees do not mow it DO Mow across the face of slopes never up and down Exerc...

Page 5: ...gine exhaust contains car bon monoxide an odorless and deadly gas Before cleaning repairing or inspecting make certain the blade and all moving parts have stopped Disconnect the spark plug wire and gr...

Page 6: ...a w a g n i t a r e p o f I y r u j n i s u o i r e s e s u a c d n a n r u t r e v o d l u o c r e w o m g n i d i r A y r u j n i s u o i r e s n i g n i t l u s e r p i l s d l u o c u o y d n a g...

Page 7: ...ing brackets Place the hairpin clips in the inner hole See Figure 2 Place one carriage bolt found in the hard ware pack included with your unit in the upper hole of the right handle mounting bracket f...

Page 8: ...changing your speed selection release the drive clutch control NOTE Only move the shift lever when the engine is running Changing the shift lever setting with the engine off can cause damage to the m...

Page 9: ...anual packed in your mower Read instructions carefully WARNING Never fill fuel tank in doors with engine running or until the engine has been allowed to cool for at least two minutes after running BEF...

Page 10: ...me engine as instructed in the separate engine manual packed with your unit If your unit is equipped with a two speed control on the engine refer to the separate engine manual packed with your unit St...

Page 11: ...you the best cut and do the most effective job of mulching WARNING If you strike a foreign object stop the engine Remove wire from spark plug thoroughly in spect the mower for any damage and repair th...

Page 12: ...may also be used to determine the position in which the drive clutch control is engaged If it is more comfortable to have the drive engaged with the lever further away from the handle tighten the driv...

Page 13: ...e instructions Maintain engine oil as instructed in the sepa rate engine manual packed with your unit Read and follow instructions carefully Under normal conditions service air cleaner as instructed i...

Page 14: ...rt over the blade with the tabs in the holes of the blade and insert the hex bolt Tighten the hex bolt to the torque listed below Blade Mounting Torque Center Bolt 450 in lb min 600 in lb max To insur...

Page 15: ...e lower pulley assembly and re move the old belt from around the crankshaft See Figure 25 15 Place the new belt over the transmission pulley Start the belt in pulley groove and rotate pulley until bel...

Page 16: ...se screws 25 Lightly lubricate the crankshaft and reinstall blade and blade adapter as described in the Cutting Blade section 26 Tip the mower back on its wheels 27 Make certain to retest the unit for...

Page 17: ...ower in a dry clean area STORAGE OF THE BATTERY The battery must be stored with a full charge A discharge battery will freeze IMPORTANT All batteries discharge during storage Recharge battery every tw...

Page 18: ...120 days from the date of purchase MTD PRODUCTS LIMITED will replace the defective battery for the original purchaser for a cost of one half 1 2 of the current retail price of the battery in effect a...

Page 19: ...not adjusted prop erly 1 Fill crankcase with proper oil 2 Remove blower housing and clean 3 Adjust carburetor Idles poorly 1 Spark plug fouled faulty or gap too wide 2 Carburetor improperly adjusted 3...

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