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Lawn mower repair

Posted on 7 February, 2018 at 14:35

Most complaints concerning petrol awn mower engine operation can be classified of the following:

a. Will not start 

b. Hard starting

c. Lack of power

d. Vibration

e. Overhiting

f. Hig oil consumption

When the cause of malfunction is not readily apparent, perform a check of the compression, ignition, and carburetion system.

This check-up, performed in a systematic manner, can usually be done in matter minutes by Dr Mower repair expert. It is the quickest quickest and surest method of determining the cause of future failures, which can be corrected at the time.

The basic check-up procedure is the same for all engine models.

Ceck Compression 

a. Loose spark plug

b. Loose cylinder head bolts

c. Blown head gasket

d.Burned vaves, Valve seats

e. Insufficent valve clearance

f. Warped cylinder head or warped valve cover

g. Warped or worn valve stems and guides

h. Worn bore and/or rings

i. Broken connecting rod

lawn mower service near me can be made of petrol lawn mower in our workshop Caterham near Oxted and Reigate for me to do is 50.00 including collection & delivery lawn mower repair cost can be cheaper if your lawn mower servicing take place annually.

Note: Appears to be an engine malfunction may be a fault of the powered equipment rather then the engine.

If Spark does not occur, look for -

a. Incorrect ignition airmature air gap

b. Shorted stop switch wire

c. Shorted stop switch 

d. Ignition armature failure

e. Impropely operating interlock system

Note: If petrol lawnmower engine runs but misses during operation, a quick check to determine if ignition is or is not at fault can be made by inserting the tester between the ignition cable and the spark. 

The spark miss will be readily seen.

Check carburetion

Before making a carburetion check, fill the fuel tank of your lawn mower with fresh, clean petrol. Be sure that the fuel shut off valve is open and flows freely through fuel line and filter before starting engine. Inspect and adjust the needle valve. Check to see that the choke closes completly.

If the engine will not start, remove and inspect the spark plug.

If plug is wet, look for -

a. Over choking

b. Excessively rich fuel mixture

c. Water in petrol

d. Inlet needle stuck open

e. Clogged air filter

f. Fouled spark plug

If plug is dry, look for -

a. Leaking carburetor mounting gaskets

b. Dirt or gum deposits in carburetor, fuel filter, fuel lines, shut-off valve or fuel tank

c. Inlet needle stuck shut

d. inoperative fuel pump ( if equipped)

 Call dr mower specialists for any problem related petrol lawn mower starting problem or just for a lawn mower service I near for you if you live in Banstead, Carshalton, Croydon, Oxted, Purley, Sutton and near to me Reigate, Redhill as well.

A simple check to determine if the petrol is getting to the combusion chamber through the carburetor is to remove the spark plug and pour a small quantity of petrol through the spark plug hole. Replace the plug and torque to 180 in. lbs. If the lawn mower engine fires a few times and stops, look for the same condition as for a dry plug.

Petrol lawn mower engines can be Briggs & Stratton, Honda, Tecumseh, and own brand as Mountfield etc.

Equipment - Affecting Engine Operation

Frequently what appears to be a problem with your lawn mower engine operation, such as hard starting, vibration, etc, may be the fault of the equipment being powered rather than the engine itself. 

Since many varied types of equipment powered by Briggs&Stratton engines, it is not possible to list all of the various conditions that may exist. Listed are the most common effects of equipment problems and what to look for as the most common causes.

Hard Starting, or No start

loose belt or lawn mower balde can cause a kickback effect, which will counteract engine cranking effort. Starting under load see if the unit is disengaged when lawn mower engine is started or if engaged, does not have a heavy parasitic load.

Any question please call doctor mower we are here to help at Dr Mower repair using a highest standard to service of your lawn mower leaving near me I offering free lawn mower collection and delivery service on petrol lawn mower service cost can be found under servicing& repairs page.

Check remote control assembly for proper adjustment. check interlock system for shorted wires. loose or corroded connection, or defective modules or switches.


Cutter blade bent remove and replace cutter blade out of balance remove and balance or call our technical team on 02081665595 

Carnkshaft bent replace or repair by specialists such us Dr Mower expert worn blade coupling mounting bolts loose mounting deck or plate cracked, damaged belts or pullesy impeller out of balance.

Power Loss

Bind or drag in unit grass cuttings build -up under deck, No lubrication in transmission or gear box Excessive drive belt tension may cause excess bearing wear or seizure.


Cutter blade coupling or pulley an oversixe or worn coupling can result in knocking usually under acceleration. No lubricant in transmission or gear box and drive gears. worn drive belts, worn bearings.

Dr Mower expert in Caterham and Near Oxted as well come and see us by appintment only. 


Categories: Check-UP

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