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Chainsaw – 20" - 24" Bar

NFES #
000159
Category
Small Engine Equipment
Updated
Storage and Shelf Life Checks
Yes
Storage and Shelf Life Procedure
Date Last Tested (DLT) not to exceed 12 months

Initial Inspection/Disposal Criteria

  1. Visually inspect for evidence of use (dust, oil, starter seal broken), damage or missing parts.
  2. Return to stock if there is no sign of use or damage and date last tested (DLT) does not exceed 12 months.
  3. Refurbish as necessary if unit has been used or fueled, damaged, or shelf life is exceeded.
  4. Dispose of the unit if it is not economically repairable.

Refurbishment procedures

A. Cleaning

  1. Remove dirt and oil using compressed air or detergent and shop towels as necessary.
  2. Use pressure washer and degreaser to remove heavy deposits of oil and grease.
  3. Equipment should be repaired and tested as quickly as possible after pressure washing to minimize rust formation on metal parts.

B. Repair

  1. Check for loose or missing parts and mounting hardware. Tighten or replace as necessary.
  2. Ensure that the air filter is clean and dry before reinstalling. Replace the filter if it is damaged or will not come clean.
  3. Replace spark plug and fuel filter if saw shows normal signs of field use. Use only solid terminal spark plugs
  4. Test function of rewind starter, ensure proper engagement of engine and recoil function. Check for damage or fraying of pull cord; repair or replace as necessary.
  5. Ensure all decals (operations and warning) are affixed and legible.
  6. Ensure fuel geyser danger sticker is present and legible. Reference cache memo 17-2 below.
  7. Inspect power-head (engine) for freeness of all moving parts, ensuring that the crankshaft, piston/cylinder, and all engine bearings are not damaged.
  8. Clean muffler of excess carbon.
  9. Inspect spark arrestor screen for build-up. Clean, repair or replace as necessary.
  10. Replace sprocket or star drum if the wear is deep enough to catch a fingernail. Inspect clutch shoes and springs. Replace if damaged or missing. Replace clutch drum if badly burned (discolored).
  11. Clean and re-grease the clutch bearing, replace if needle bearings are pitted or damaged.
  12. Ensure saw chain is properly sharpened to manufacturer’s specifications after each use. Replace chain if: Cutters have been filed down to 50% or less of the original cutter length; two or more cutters are broken; tie straps are worn down to rivets; if stretched beyond tensioning abilities; or when side plate is filed back to rear attaching rivet.
  13. Service the guide bar after each use. Inspect groove depth and width; true and file rails; and inspect for bends. Replace guide bar if rails are cracked, chipped, burned, or have a dip deeper than 1/16”. Inspect sprocket tip for wear and looseness. Lubricate tip if grease type.

C. Test for Performance

  1. Refer to the owner’s manual for operations and specifications information specific to chainsaw model.
  2. Should any function fail a test, refer to the manufacturer’s repair manual.
  3. Check condition of fuel mix; ensure fuel is fresh and the correct mix oil ratio is used prior to starting the engine. Use a fuel stabilizer in fuel during testing to help ensure proper operation of engine at post storage start up.
  4. Ensure recoil starter functions properly. Check for damage or fraying of pull cord; repair or replace as necessary.
  5. Start saw and allow engine to warm-up at idle.
  6. Ensure that there are no leaks at engine, fuel tank or bar oil tank.
  7. Run saw and inspect for proper function of bar oiler and chain brake.
  8. Ensure all engine controls are operational.
  9. Inspect engine speed using a digital tachometer, adjust carburetor to obtain specified speed.
  10. If saw chain rotates at the specified idle speed, inspect clutch for loose and or missing springs.
  11. Should any function fail a test, refer to the manufacturer’s repair manual and troubleshooting guide to correct the problem.
  12. Remove all fuel from fuel tank and run engine until carburetor is completely empty of fuel.
  13. Remove bar and chain oil from the oil tank (local cache option).

D. Repackaging

  1. Attach bar guard on cutting attachment.  
  2. Use a nylon “zip-tie” to tie off (seal) starter rope to the handlebar.
  3. Attach a certification tag that indicates date last tested (DLT), property #, and name of inspector certifying the performance.
  4. Ensure that all identification (property #, serial #, owner ID) is affixed and legible.

 

NWCG Latest Announcements

NEW! S-219, Firing Operations (Blended) Now Available

Date: Sept 11, 2025
Questions? Please contact:
Fuels Management Committee 

The S-219, Firing Operations (Blended) course is now available on the Wildland Fire Learning Portal. Developed through the Incident Performance and Training Modernization (IPTM) effort, this training supports individuals working towards Firing Boss, Single Resource (FIRB) incident qualifications.

This blended course combines online and instructor-led training to provide students with the knowledge and skills required to perform the duties of the FIRB, as described in the NWCG Incident Position Standards for Firing Boss, Single Resource, PMS 350-105.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1, scheduled for January 2026.

References:

S-219, Firing Operations (Blended)

NWCG Firing Boss, Single Resource Position Page

Wildland Fire Learning Portal

NWCG Committees Observe Suicide Prevention Awareness Week: September 7-13, 2025

Date: Sep 5, 2025
Questions? Please contact:
Mental Health Subcommittee

The NWCG Mental Health Subcommittee (MHSC) and Risk Management Committee (RMC) recognize the unique challenges and demands faced by the wildland fire community. The MHSC and RMC know that we are all stronger together and believe in fostering a culture of support, understanding, and resilience.

Suicide Prevention Awareness encourages us to actively connect with and support each other. For more information that could make a difference for yourself or someone else please review the materials and resources provided for the 2025 Suicide Prevention Awareness Week.

References:

2025 Suicide Prevention Awareness Week Materials and Resources

NEW! Incident Performance and Training Modernization Story Map Now Available

Date: Aug 26, 2025
Questions? Please contact:
National Wildfire Coordinating Group

NWCG is excited to announce the launch of the Incident Performance and Training Modernization (IPTM) Story Map, a new interactive resource that showcases how NWCG is transforming wildland fire training and qualifications through a performance-based system.

Since its launch in 2023, IPTM has made major strides in updating how we manage incident positions:

  • 36 incident positions now have new Incident Position Standards and Next Generation Position Task Books available for field use
  • 6 more incident positions are nearing completion
  • 111 total incident positions are being analyzed through the IPTM initiative

The Story Map guides you through the IPTM process, highlights key accomplishments, and outlines what’s ahead. Whether you are a trainer or a trainee, this tool offers valuable insight into the modernization effort shaping the future of wildland fire training and qualifications.

This effort would not be possible without the contributions of NWCG staff, NWCG committees, and hundreds of subject matter experts across the wildland fire community.

References:

IPTM Story Map

Incident Performance and Training Modernization Webpage

NEW! S-290, Intermediate Wildland Fire Behavior (Blended) Available Now

Date: Aug 15, 2025
Questions? Please contact:
Fire Behavior Subcommittee

NWCG is excited to announce that the S-290, Intermediate Wildland Fire Behavior (Blended) training is now available on the Wildland Fire Learning Portal. S-290 (Blended) training combines online training and instructor-led training components that support individuals working towards any Single Resource Boss or Fire Effects Monitor incident qualifications.

This second course in the series collectively serves to develop fire behavior prediction knowledge and skills, and provides more detailed information on fuels, weather, and topography that affect wildland fire behavior for safety purposes.

Students are required to finish the prerequisite S-190, Introduction to Wildland Fire Behavior, before enrolling in S-290, Intermediate Wildland Fire Behavior (Blended).

References:

S-290, Intermediate Wildland Fire Behavior (Blended)

S-190, Introduction to Wildland Fire Behavior

Wildland Fire Learning Portal