Stihl TS420 Parts

Here we have outlined some of the TS 420 STIHL Cutquik® Cut-Off Saw specs and cool features.

Specifications of the STIHL Saw TS420

When you look at the Stihl ts420 manual, you see the following specs:

• DISPLACEMENT 66.7 cc (4.07 cu. in.)
• ENGINE POWER 3.2 kW (4.4 bhp)
• WEIGHT* 9.4 kg (20.7 lbs.)
• FUEL TANK CAPACITY 710 cc (24 oz.)
• ENGINE SPEED 9,000 rpm (Elec. Gov.)
• MAX. SPINDLE SPEED 5,350 rpm
• ARBOR SIZE 20 mm
• MAXIMUM WHEEL SIZE 300 mm (12")
• MAXIMUM CUTTING DEPTH 100 mm (3.9")
• POWER SOURCE Gas

Yes, this is a really nice cut off saw for professional use.

So let us highlight some of the STIHL TS420 parts.

Highlighted Stihl TS420 Parts List

The Stihl ts420 parts list has some features that make this cutoff saw easy to maintain and use.

• Reduced-Emission Engine Technology for zero or low exhaust emissions.
• IntelliCarb™ Compensating Carburetor to automatically adjust the air/fuel ratio when the Stihl TS420 air filter becomes restricted or partially clogged and maintains the engine’s correct RPM. It uses air from the clean side of the air filter to control the diaphragm and flow of fuel. As the Stihl TS420 air filter becomes dirty and less air is available for the carburetor, the IntelliCarb™ system adjusts the fuel flow to compensate for the decrease in air flow. This is in contrast to typical carburetors that utilize this air from the “dirty” side of the air box. If you need a new carb, ArborTec has your replacement carburetor for Stihl TS420. This carb replaces Stihl part no. 4238-120-0600.
• X2 Air Filtration System allowing air filters to last up to a year. Outside air enters the system in a swirling motion, removing 80% of dust particles. This pre-cleaned air is then routed through the primary and secondary air filters before being sent into the engine. The X2 Air Filtration System is virtually maintenance free and maintains an incredible 99.96% cleaning efficiency.
• Semi-Automatic Belt Tensioning increases the service life of the belts and shaft bearings. It is a nut that allows for easy adjustment of drive belt with a couple of twists.
• Anti-Vibration System for minimizing the vibration levels of the saw.
• Spark Arrestor Muffler has large baffles which reduce noise level, and contains a screen designed to reduce the emission of sparks.
• Intergrated Water Supply Tube

(Note: Stihl TS 420 parts are all the same as the TS410 parts, except that the wheel guard and cutting wheel is smaller on the 410.)

Among the very important stihl ts 420 parts are its air filter system. To inspect or replace the filter, remove the cover at the back of the saw behind the top handle. These filters require no maintenance or cleaning. You simply replace 'em if and when you detect a loss of engine power.

One of the interesting little stihl ts420 parts is the muffler spark arrestor screen. Good idea!

Every Stihl ts 420 has a water attachment to rinse or wash away airborne dust and particles.

To adjust the tension of the drive belt, you'll find a tensioning nut to properly adjust the tension of the drive belt to the cutting wheel.

Parts Involved With Starting Your Stihl TS 420

The Stihl saw ts420 has a purge pump or primer that helps with easier starting by filling the carburetor with fresh fuel, while purging warm fuel out of the carb. Carburetors also have adjustment screws that you can access through the housing. Read the manual for proper adjustment requirements.

There's a decompression valve button relieves some compression from the cylinder so that the saw will be easier to crank. By the way, ArborTec has a replacement Stihl TS420 cylinder kit (replaces original Stihl part #4238 020 1202) for you here. If you just need the piston for a ts 420, then here's your replacement Stihl TS420 piston kit that replaces original part #4238 030 2003.

Another thing that helps start the ts420 is the throttle lock thumb switch on the front of the handle. With this, you can lock the gas flow on for cold starting, but you should not operate the saw with this locked. Of course there's a choke lever for starting a cold ts 420 also.

The throttle trigger interlock is on the top of the saw's handle. The palm of the trigger hand covers and depresses it to keep the saw running. Once you let go, the saw will stop. This is a safety device to prevent trigger action when not firmly gripped. The trigger cannot be depressed to rev the engine unless this throttle trigger interlock is depressed. For starting, you squeeze the throttle interlock and throttle at the same time, and then lock the thumb switch in the ON position. Then the throttle will remain in a partially pressed position even when you let go.

When starting a Stihl ts 420 cold, close the choke. If the saw is still warm after a previous run, you can use the choke half way. Press the compression release button, and once the engine has fired, it'll close itself. Press the purge button a few times until you see it fills with fuel. Now that the fuel lines and carb have fresh and cool fuel, it should start easier. The first time the machine attempts to start, push in the compression release button again and move the choke to the open position so that you don't flood the machine on your next pull with choke in full closed position. (Sometimes starting problems indicate a need for a new Fuel Filter For Stihl TS420 Replaces 0000-350-3500.)

Here's a trick regarding the TS420 Stihl starter rope. Don't let it go after a pull so that it snaps back or else the grip can break. If you break yours, click here to buy a replacement Stihl recoil starter assembly. This replaces original part #4238 190 0300.

TS 420 STIHL

If you have a ts 420 stihl, you know how good it is. If you seek a great professional, easy to handle cut off saw, the ts 420 STIHL should be on your list.

For Stihl TS420 parts to fix 'em like new, go to ArborTec. We've linked to several parts above, and we also probably have the best prices on: replacement crankshaft for Stihl TS 420 here. This crankshaft replaces OEM part #4238-030-0400.

Clutch that fits Stihl TS-420 and replaces #1125-160-2005.

Here's the general Stihl TS420 parts page.

Hope this helps you get to know your saw and repair it if needed.