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10

Cutting Height Adjustment Lever

This lever, located at each wheel, lets you adjust cutting 
height of the grass. Remember to put all four levers at 
the same height to avoid uneven cut.

Throttle Control

 

The engine is equipped with a constant speed throttle 
for maximum engine and cutting performance.

Recoil Starter

The recoil starter is attached to the handle. Stand 
behind the unit and pull the recoil starter to start engine.

Primer

The primer is used to pump gas into the carburetor. Use 
it to assist in starting a cold engine, but do not use it 
when restarting a warm engine after a short shutdown.

Mulching Plug

The mulching plug is used only for mulching purposes. 
Instead of collecting the grass clippings in a grass 
catcher, some mower models have the option of 
recirculating the clippings back to the lawn. This is 
called mulching.

SECTION 5:  OPERATING YOUR LAWN MOWER

Gas and Oil Fill-Up 

Service the engine with gasoline and oil as 
instructed in the separate engine manual packed 
with your mower. Read instructions carefully.

Before Starting Mower

Attach spark plug wire to spark plug. Make certain 
the metal cap on the end of the spark plug wire is 
fastened securely over the metal tip on the spark 
plug.

Starting Engine

Push the primer three times. Wait two seconds 
between each push. In temperatures below 55° F, 
prime five times. Do not prime to restart a warm 
engine after a short shutdown.

Standing behind the mower, depress the blade 
control handle and hold it against the upper handle.

Grasp starter handle and pull rope out slowly until 
engine reaches start of compression cycle (rope 
will pull slightly harder at this point). Let the rope 
rewind slowly. Pull rope with a rapid, continuous, 
full arm stroke. Keeping a firm grip on the starter 
handle, let the rope rewind slowly.

Stopping Engine 

Release blade control handle to stop the engine 
and the blade.

Disconnect spark plug wire and move away from 
spark plug to prevent accidental starting. 

WARNING: 

Never fill fuel tank indoors, or 

when engine is running or hot. Do not smoke 
when filling up the fuel tank.

WARNING: 

Be sure no one other than the 

operator is standing near the lawn mower while 
starting engine or operating mower. 

WARNING: 

Never run engine indoors or in 

enclosed, poorly ventilated areas. Engine 
exhaust contains carbon monoxide, an 
odorless and deadly gas.

WARNING: 

Keep hands, feet, hair and 

loose clothing away from any moving parts on 
engine and lawn mower.

Summary of Contents for 437

Page 1: ...eting applicable local or state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Secti...

Page 2: ...plained below For future reference please copy the model number and the serial number of the equipment in the space below ENGINE INFORMATION The engine manufacturer is responsible for all engine relat...

Page 3: ...ne in bare feet sandals slippery or light weight e g canvas shoes 8 Do not put hands or feet near rotating parts or under the cutting deck Contact with the blade can amputate hands and feet 9 A missin...

Page 4: ...d fall can cause serious personal injury If you feel you are losing your balance release the blade control handle immediately and the blade will stop rotating within 3 seconds Do Not 1 Do not mow near...

Page 5: ...equipment manufacture s O E M blade only listed in this manual Use of parts which do not meet the original equipment specifications may lead to improper performance and compromise safety 4 Mower blade...

Page 6: ...LY Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If operating a walk behind mower...

Page 7: ...laced on top of the unit Remove it from the unit and set it out of the way See Figure 2 Figure 2 Raise the lower handle as shown in Figure 2 until it snaps into place Raise the upper handle as shown i...

Page 8: ...before shipping proceed to the next section If it is unassembled follow the steps below Insert frame into grass bag with the black plastic side on the bottom of bag See Figure 7 Figure 7 Slip the side...

Page 9: ...e the illustrations in Figure 11 with your lawn mower to familiarize yourself with the location of various controls and adjustments Figure 11 Blade Control Handle The blade control handle is located o...

Page 10: ...l cap on the end of the spark plug wire is fastened securely over the metal tip on the spark plug Starting Engine Push the primer three times Wait two seconds between each push In temperatures below 5...

Page 11: ...ect in the bag as you run mower Operate mower till the grass bag is full Stop the engine completely by releasing the control handle Make sure that the unit has come to a complete stop Lift discharge d...

Page 12: ...e a season or every 50 hours of operation Inspect muffler periodically and replace if necessary Damaged mufflers or spark arresters can create a fire hazard IMPORTANT Make sure to avoid muffler and su...

Page 13: ...screwdriver See Figure 14 Remove metal from the heavy side until it balances evenly It is recommended that the blade always be removed from the adapter for the best test of balance Figure 14 Before re...

Page 14: ...clips in the inner holes of the weld pins and replace the carriage bolts and wing nuts on the handle brackets Attach the starter rope as instructed in the Assembling Your Lawn Mower section Adjusting...

Page 15: ...e Cause Corrective Action Engine fails to start 1 Blade control handle disengaged 2 Spark plug wire disconnected 3 Fuel tank empty or stale fuel 4 Blocked fuel line 5 Faulty spark plug 6 Engine floode...

Page 16: ...ARTS LIST FOR MODEL 437 1 6 10 3 2 11 4 5 4 19 35 33 32 29 30 51 41 40 46 24 22 21 20 25 42 44 44 12 31 31 30 29 28 26 27 44 44 49 43 18 36 38 45 48 34 14 13 37 39 25 52 47 16 23 7 8 9 12 15 55 54 53...

Page 17: ...ont Spring Lever 29 738 0507B Shld Bolt 5 Dia x 357 30 736 0105 Bell Washer 38 I D x 88 O D 31 738 0102 Front Axle Bolt 32 720 0426 Spring Lever Knob 33 732 0417A Rear Spring Lever 34 14578 Height Adj...

Page 18: ...such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d MTD LLC does not ext...

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