Stihl MS 170 Support Question
Stihl MS 170 Support Question
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Question posted by 719cantgetright on April 15th, 2023
Can't Pull Start Rope
I was replacing the clutch on my Stihl Ms 170 chainsaw and used a screw driver down the the spark plug hole to stop the motor from turning. Now after putting it back together I try and start the chainsaw but the pull rope won't budge. What do I do to fix it or is it fixable?
Current Answers
Answer #1: Posted by Technoprince123 on April 15th, 2023 9:59 AM
Technoprince123
Member since:
February 8th, 2021 Points: 1,205,190
Member since:
February 8th, 2021 Points: 1,205,190
Please response if this answer is acceptable and solw your problem thanks
Answer #2: Posted by hzplj9 on April 15th, 2023 1:59 PM
hzplj9
Member since:
June 25th, 2012 Points: 4,875,670
Member since:
June 25th, 2012 Points: 4,875,670
I think you may have to remove the cover on the starter assembly and investigate. However take a look at this youtube video explaining the issues that arise with this model of chainsaw.
www.youtube.com/watch?v=XzbyTAcVR8Q
And this one.
www.youtube.com/watch?v=8i8l6vM_DOM
Hope that solves your problem. Please mark as helpful if it leads you to a satisfactory solution.Thank you.
Answer #3: Posted by MarkivShah on April 18th, 2023 12:05 AM
MarkivShah
Member since:
April 14th, 2023 Points: 15,780
Member since:
April 14th, 2023 Points: 15,780
Using a screwdriver down the spark plug hole to stop the engine from turning may have caused the piston to get stuck in the cylinder. Here are some steps you can try to fix the issue:
- Remove the spark plug and try to pull the starter rope. If the rope moves freely, the piston may be stuck in the cylinder.
- Put a few drops of penetrating oil or two-cycle oil in the spark plug hole and let it sit for several hours.
- Use a piston stop tool or a piece of rope to lock the piston in place. Insert the tool or rope into the spark plug hole and turn the engine until the tool or rope stops the piston.
- Gently tap the end of the clutch drum with a rubber mallet or a wooden block and a hammer. This may help loosen the piston.
- Once the piston is freed, reassemble the chainsaw and try starting it again.
If the above steps do not work, it is recommended that you take your chainsaw to a professional for repair.
Related Stihl MS 170 Manual Pages
Product Instruction Manual - Page 3
... Arresting Screen in Muffler 39
Spark Plug
39
Starter rope
40
Storing the Machine
41
Checking and Replacing the Chain
Sprocket
41
Maintaining and Sharpening the Saw Chain
Maintenance and Care
Main Parts
Specifications
Special Accessories
Ordering Spare Parts
Maintenance and Repairs
STIHL Incorporated Federal Emission Control Warranty Statement
STIHL Incorporated California Exhaust and...
Product Instruction Manual - Page 7
...spark or other personal injury from your body and the cutting attachment behind you also wear a face shield or face screen over longer distances. If this machine if it to prevent turnover, fuel spillage and damage to the unit. MS 170, MS 170 C, MS 180, MS...damaged.
Fuel
Your STIHL power tool uses an oilgasoline mixture for use with STIHL power tools, their use may escape from ...
Product Instruction Manual - Page 9
... the chain in your manual. Start and operate your power tool if it is (are) tightened securely after having tightened the nut(s) and thereafter at regular intervals (whenever the saw for you to loosen or come off ). MS 170, MS 170 C, MS 180, MS 180 C
7
a loose boot may cause arcing that the spark plug boot is damaged, improperly adjusted...
Product Instruction Manual - Page 10
...running cutting tool, do not wrap the starter rope around the handles.
8
MS 170, MS 170 C, MS 180, MS 180 C
Warning! During Operation
Holding and ...turn the chain.
To reduce the risk of your right hand pull out the starter grip slowly until you and all other solid surface in a locked (straight) position. When the engine is started , the engine speed with the ground, put...
Product Instruction Manual - Page 13
... saw is blocked increases the load and will cause the clutch to slip continuously. From time to important components (e.g. Antivibration elements should be replaced, consult your muffler serviced and repaired by OSHA and the Environmental Protection Agency. Such use and disposal of the cylinder, spark plug) become hot during normal operation may occur if the...
Product Instruction Manual - Page 16
... brake as described in good working order.
If clutch slippage in excess of 3 seconds has occurred, allow the motor housing to cool before potential contact with a Quickstop chain brake which can cause excessive heat, leading to reduce the risk of ANSI B 175.1-2000
14
MS 170, MS 170 C, MS 180, MS 180 C
No Quickstop or other parts of...
Product Instruction Manual - Page 24
... improper tools are tangled.
MS 170, MS 170 C, MS 180, MS 180 C maintained properly or if
nonapproved replacement parts were
1
used to hold the flywheel in order to remove the clutch, structural damage to the flywheel could occur and could subsequently cause the flywheel to the maintenance chart in the appropriate
section of non-STIHL parts may deny coverage.
001BA151...
Product Instruction Manual - Page 25
... used and other injuries, it inoperable. MS 170, MS 170 C, MS 180, MS 180 C
23 An improperly maintained muffler will reduce the effectiveness of the machine. replace worn sprockets or chains. You can render it must be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in a dry place and away from the spark plug or with a removed spark...
Product Instruction Manual - Page 30
... air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that state they are designed for some time.
N Check chain tension frequently - The idle speed and maximum speed of personal injury from static
28
MS 170, MS 170 C, MS 180, MS 180 C N If necessary...
Product Instruction Manual - Page 37
... to run F and the engine begins to the
stop position 0
MS 170, MS 170 C, MS 180, MS 180 C
35 N Move the master control lever to idle
207BA007 KN
207BA006 KN
N Pull the hand guard toward the handlebar
The chain brake is running
STOP
0
3
2
4
N Press the throttle trigger lockout (2) and blip the throttle trigger (4); When the engine has turned over for use.
Product Instruction Manual - Page 41
... screws. place the cover in Muffler
In some countries the muffler is damaged or heavily carbonized, fit a new one. then turn an additional 1/2 turn
Saw chain rotates at part throttle etc.) affect the condition of the spark plug. These factors cause deposits to form on power, difficult to rotate -
then back off the spark plug boot N Unscrew spark plug
MS 170, MS 170 C, MS...
Product Instruction Manual - Page 42
... spark plug. N Check electrode gap (A) and
readjust if necessary - Rectify problems which have it slowly into the housing
See "Starting / stopping the engine"! Unfavorable running conditions, e.g. N Undo the screws on the fan housing
and hand guard respectively N Remove the fan housing N Tension or, if necessary, replace
the starter rope or rewind spring
40
MS 170, MS 170 C, MS 180, MS...
Product Instruction Manual - Page 49
...
Safety labels
Replace
1) STIHL recommends a STIHL servicing dealer. 2) Firmly tighten down the cylinder base screws of professional saws (3.4 kW or more) after each refueling stop weekly monthly every 12 months if problem if damaged if required
Cooling inlets
Clean
X
Cylinder fins
Clean
X
X
Carburetor
Check idle adjustment - X X
X X
X
X X
MS 170, MS 170 C, MS 180, MS 180 C
47...
Product Instruction Manual - Page 50
...
17 18
19
23
20
24
22
21
25
1 Shroud Lock 2 Carburetor Adjusting Screw 3 Decompression Valve1)
(Automatically Resetting) 4 Chain Brake 5 Muffler with Spark Arresting Screen 6 Chain Sprocket 7 Chain Sprocket Cover 8 Chain Catcher 9 Front Chain ... Bumper Spike 16 Front Hand Guard 17 Front Handle (Handlebar) 18 Spark Plug Boot 19 Starter Grip 20 Master Control Lever 21 Fuel Filler Cap ...
Product Instruction Manual - Page 51
...'s hands. (not illustrated)
MS 170, MS 170 C, MS 180, MS 180 C
49 Definitions
1 Shroud Lock Lock for starting the engine. Is activated in a kickback situation by the operator's hand or by the engine and cutting attachment to operator's right hand. English
20 Master Control Lever Lever for holding saw .
18 Spark Plug Boot Connects the spark plug with Spark Arresting Screen Muffler...
Product Instruction Manual - Page 52
... rpm
Electronic magneto ignition (breakerless)
Spark plug (resistor Bosch WSR 6 F,
type):
NGK BPMR 7 A
Electrode gap:
0.02 in (28 mm) 2.0 hp (1.5 kW) at 8,500 rpm 2,800 rpm
Fully automatic, speed-controlled oil pump with rotary piston
Oil tank capacity: 4.9 fl.oz (0.50 L)
Weight
dry, without bar and chain MS 170:
MS 180 C with quick chain tensioner...
Product Instruction Manual - Page 55
... will be used in a reasonable amount of sale, to conform with applicable regulations for your failure to the ultimate purchaser. EPA regulations for two years.
Any replacement part or...of your small off-road equipment engine. STIHL Incorporated recommends that you have signed and sent back the warranty card to
MS 170, MS 170 C, MS 180, MS 180 C
53
Any warranted part which cause...
Product Instruction Manual - Page 56
...replacement point.
54
MS 170, MS 170 C, MS 180, MS 180 C Any manufacturer-approved or equivalent replacement part may be used for damages to other services and adjustments necessary for diagnostic labor which is tested as non-defective, STIHL...to make a Claim for the warranty period.
STIHL Incorporated is defective. Fuel Pump
- Spark Plug
- Any warranted part which leads to the ...
Product Instruction Manual - Page 57
... that are responsible for two years in a reasonable amount of time, not to a STIHL servicing dealer as soon as :
Air Filter, Carburetor, Fuel Pump, Choke (Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, Catalytic Converter (if applicable), Fuel Tank, Fuel Cap, Fuel Line, Fuel Line...
Product Instruction Manual - Page 58
...Cold Start Enrichment System), Control Linkages, Intake Manifold, Magneto or Electronic Ignition System (Ignition Module), Spark Plug, ...used for warranty coverage.
56
MS 170, MS 170 C, MS 180, MS 180 C If any authorized STIHL servicing dealer and present the signed STIHL product registration card, or the print-out of a warranted part still under the warranty must be repaired or replaced...
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