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9

Removing Grass Catcher

Lift the rear discharge door on the mower, and lift 
the grass catcher up.

Release the rear discharge door.

Converting to Side-Discharge

Your mower has been shipped as a mulcher. To 
convert it to a side-discharge mower, lift the 
mulching plug. Slide the two hooks on the side-
discharge deflector under the hinge pin on the 
mulching plug assembly. Lower the mulching plug. 
See Figure 10 .

Figure 10

Do not remove the side mulching plug at any time, 
even when you are not mulching.

SECTION 4:  KNOW YOUR LAWN MOWER

Read this owner’s manual and safety rules before operating your lawn mower. Compare 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 on the upper handle 
of the mower. The blade control handle must be 
depressed in order to operate the unit. Release the 
blade control handle to stop the engine and the blade.

WARNING: 

Never operate the mower 

without the mulching cover, the grass catcher 
bag, or the discharge chute properly installed.

Side

Chute

Deflector

Mulching

Plug

Hinge
Pin

Blade Control 

Grass Catcher

Height Adjustment 

Recoil Starter

Handle

Side-Discharge

Spark Plug

Lever

Chute 

Mulch Plug

WARNING: 

The blade control handle is a 

safety device. Never attempt to bypass its 
operations. The blade will be rotating whenever 
the engine is running.

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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