909 DYM-1773 Instruction Manual Download Page 12

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9.2 Cutting blade

CAUTION:

 Be sure to disconnect and ground the spark 

plug wire before working on the cutting blade to prevent 

accidental engine starting. Protect hands by using heavy 

gloves or a rag to grasp the cutting blades .lip mower as 

specified in separate engine manual. Remove the hex bolt 

and washer which hold the blade and blade adapter to the 

engine crankshaft. Remove the blade and adapter from the 

crankshaft.

WARNING:

 Periodically inspect the blade adapter for 

cracks, especially if you strike a foreign object. Replace 

when necessary. For best results your blade should be 

sharp. The blade may be resharpened by removing it and 

either grinding or filing the cutting edge keeping as close to 

the original bevel as possible. It is extremely important that 

each cutting edge receives an equal amount of grinding to 

prevent an unbalanced blade. Improper blade balance will 

result in excessive vibration causing eventual damage to 

the engine and mower. Be sure to carefully balance blade 

after sharpening. The blade can be tested for balance by 

balancing it on a round shaft. saewdriver. Remove metal 

from the heavy side until it balances evenly. 
Before reassembling the blade and the blade adapter to the 

unit, lubricate the engine crankshaft and the inner surface of 

the blade adapter with light oil. Install the blade adapter on 

the crankshaft. Refer to figure 13. Place the blade with the 

part number facing away from the adapter.
Align the washer over the blade and insert the hex bolt. 

lighten the hex bolt to the torque listed below:

9.3 Blade mounting torque

Center Bolt 40Nm-50Nm. to insure safe operation of your 

unit. ALL nuts and bolts must be checked periodically for 

correct tightness.
After prolonged use, especially in sandy soil conditions, 

the blade will become worn and lose some of the original 

shape. Cutting efficiently will be reduced and the blade 

should be replaced. Replaca with an approved factory 

replacement blade only. Possible damage resuffing from 

blade unbalance condition is not the responsibility of the 

manufacturer.
When you change the blade, Must use the original type 

marked on the blade (26300100401 for DYM1773); (for 

order the blade, pis. contact your local dealer or call our 

company)

9.4 Engine

Refer to the separate engine manual for engine 

maintenance instructions. Maintain engine oil as instructed 

in the separate engine manual packed with your unit. Read 

and follow instructions carefully.
Service air cleaner as per separate engine manual under 

normal conditions.
Clean every few hours under extremely dusty conditions. 

Poor engine performance and flooding usually indicates that 

the air cleaner should be serviced.
To service the air cleaner, refer to the separate engine 

manual packed with your unit.
The spark. plug should be cleaned and the gap reset once 

a season. Spark plug replacement is recommended at the 

start of each mowing season; check engine manual for 

correct plug type and gap specifications.
Clean the engine regularly with a cloth or brush. Keep the 

cooling system (blower housing area) clean to permit proper 

air circulation which is essential to engine performance and 

life. Be certain to remove all grass, dirt and combustible 

debris from muffler area.

Flat Key
Blade Adapter

Blade

Washer
Hex Bolt

Summary of Contents for DYM-1773

Page 1: ...INSTRUCTION MANUAL DYM 1773 135CC PETROL LAWN MOWER ...

Page 2: ...fications 4 Safety rules for petrol lawn mowers 4 Operation safety instructions 6 Unpacking 7 Contents of carton 7 Know your product 8 Operating Instructions 9 Operating Procedures 10 Best results when mowing 10 Grass Catcher 10 Mower Deck 10 Height Adjustment 11 Maintenance and Cleaning 11 Cutting Blade 12 Blade Mounting Torque 12 Engine 12 Corrective Action 13 ...

Page 3: ...agnetic compatibility Noise label rating 96dBA taken at 7 5 metres you must wear ear protection at all times Introduction Your new 909 power tool will more than satisfy your expectations It has been manufactured under stringent 909 Quality Standards to meet superior performance criteria You will find your new tool easy and safe to operate and with proper care it will give you many years of dependa...

Page 4: ...re nearby If the operator has taken medicine or substances that can affect his ability to react and concentrate Remember that the operator or user is responsible for accidents or hazards occurring to other people or their property Preparation While mowing always wear sturdy footwear and long trousers Do not operate the equipment when barefoot or wearing open sandals Thoroughly inspect the area whe...

Page 5: ...ven models disengage the drive clutch before starting the engine Start the engine carefully following the instructions and keeping feet well away from the blade Do not tilt the lawn mower when starting the engine Start the engine on a flat surface that is free of obstacles and tall grass Do not put hands or feet near or under rotating parts Keep clear of the discharge opening at all times Never pi...

Page 6: ... hazards Fuel goes off in about 3 4 months If you find your mower does not start try changing the fuel in the tank with newly purchased fuel Operation safety instructions WARNING Stop the engine and unplug the spark plug before any repairs or maintenance operations Check that all nuts bolts and screws are well tightened before every use Before mowing ensure that the blade and the blade fixing scre...

Page 7: ...his process Fill with fuel and oil before starting the engine Never open the cap of the fuel tank to add gasoline while the engine is running or still hot Do not start the engine if there is spilt fuel on the mower or in the area surrounding Take the mower away from the zone where fuel has been split and avoid any contact from a hot source as long as the split gasoline is completely evaporated Tig...

Page 8: ...your product 1 Brake control handle 2 Throttle choke lever 3 Rope guide 4 Grass sack 5 Height adjusting lever 6 Fuel cap 7 Deck 8 Starter handle 9 Locking lever 10 Oil cap 11 Spark plug 1 11 6 2 8 9 4 10 7 3 5 ...

Page 9: ...ng 6 2 To start engine and engage blade 1 The unit is equipped with a rubber boot over the end of the spark plug make certain the metal loop on the end of the spark plug wire inside the rubber boot is fastened securely over the metal tip on the spark plug 2 Before starting engine please turn the fuel cock to the position Fig 9D 3 When starting cool engine turn throttle choke lever to position Fig ...

Page 10: ...ength for the second cut and perhaps cutting in a different pattern than was used the first time Overlapping the cut a little on each pass will also help to clean up any stray clippings left on the lawn The mower should always be operated at full throttle to get the best cut and allow it to do the most effective job of mowing Clean underside of deck Be certain to clean the underside of the cutting...

Page 11: ...CAUTION Disconnect spark plug before servicing 1 Wheels Lubricate the ball bearings in each wheel at least once a season with a light oil 2 Engine Follow engine manual for lubrication instructions 9 Cleaning CAUTION Do not hose engine Water can damage engine or contaminate the fuel system 1 Wipe deck with dry cloth 2 Hose under deck by tilting the mower so that the spark plug is up 9 1 Engine air ...

Page 12: ...torque listed below 9 3 Blade mounting torque Center Bolt 40Nm 50Nm to insure safe operation of your unit ALL nuts and bolts must be checked periodically for correct tightness After prolonged use especially in sandy soil conditions the blade will become worn and lose some of the original shape Cutting efficiently will be reduced and the blade should be replaced Replaca with an approved factory rep...

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