MTD 760-770 Lawn Mower User Manual


 
se c t i O n 7 — se r v i c e se c t i O n 7 — se r v i c e
Jump Starting
Never jump start a damaged or frozen

ignitions are off. Do not allow cable clamps to touch.
Connect positive (1. +) cable to positive post (+) of your

Connect the other end of the cable to the (positive 2. +) post
of the jumper battery.
Connect the second cable (negative 3. ) to the other post of
the jumper battery.
Make the final connection on the engine block of the 4.
tractor, away from the battery. Attach to a unpainted part
to assure a good connection.
If the jumper battery is installed on a

engine when jump starting your tractor.
5.
this manual).
6.
cables, in reverse order of connection.
Charging

while charging. Charge the battery in a well
ventilated area and keep away from an open flame
or pilot light as on a water heater, space heater,
furnace, clothes dryer or other gas appliances.

use only a charger designed for 12V lead-acid


Always follow its instructions and heed its warnings.
If your tractor has not been put into use for an extended period
of time, charge the battery as follows:
Set your battery charger to deliver a max of 10 amperes.1.
If your battery charger is automatic, charge the battery until the
charger indicates that charging is complete. If the charger is not
automatic, charge for no fewer than eight hours.
Fuse


excessive amperage.

will not crank, first check to be certain that the fuse has not
blown. It can be found at the rear of the unit, underneath the
fender located by the battery.
Always use a fuse with the same
amperage capacity for replacement.
Cutting Blades
Shut the engine off and remove
ignition key before removing the cutting blade(s) for

using heavy gloves when grasping the blade.


struck a foreign object. Do not operate the machine
until damaged components are replaced.
To remove the blades, proceed as follows.
Remove the deck from beneath the tractor, (refer to 1.
Cutting Deck Removal earlier in this section) then gently
flip the deck over to expose its underside.
2.
baffle and the cutting blade to act as a stabilizer.
See Fig. 7-6.
Remove the hex flange nut that secures the blade to the 3.
spindle assembly. See Fig. 7-6.
To properly sharpen the cutting blades, remove equal 4.
amounts of metal from both ends of the blades along the
cutting edges, parallel to the trailing edge, at a 25°- to 30°
angle. Always grind each cutting blade edge equally to
maintain proper blade balance. See Fig. 7-7.
If the cutting edge of the blade has
previously been sharpened, or if any metal
separation is present, replace the blades with new
ones.
A poorly balanced blade will cause
excessive vibration, may cause damage to the
tractor and/or result in personal injury.
5.
metal from the heavy side until it balances evenly.
