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Mikuni HSR 42/45/48 Pull Choke Knob Assembly

Mikuni HSR 42/45/48 Pull Choke Knob Assembly TM29/31

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  • Mikuni HSR 42/45/48 Pull Choke Knob Assembly TM29/31
  • Mikuni HSR 42/45/48 Pull Choke Knob Assembly TM29/31
Mikuni HSR 42/45/48 Pull Choke Knob Assembly

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$22.25
$22.25
SKU: TM29/31
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Specific Fitment-Check Fitment details section

Description

Details

Body mounted choke assembly for the HSR 42, 45 and 48mm Mikuni carburetors.  Completely replaces the typical cable type setup.

  • Dimensions: Overall length: 85.57 mm (from top of cap to base of spindle); Outside of screw threads, 11.5mm; Base of thread area to end of spindle (choke fully in): 48.43mm. OD of plunger 7.97mm; Length of plunger: 14.81 (without tip); spindle tip (below plunger) 7.34mm

Additional Information

Specification Details
SKU TM29/31
Brand Genuine Mikuni
Country of Manufacture Japan

Fitment Information

Mikuni Models

  • Mikuni HSR42 New Style
  • Mikuni HSR42 Old Style
  • Mikuni HSR45 New Style
  • Mikuni HSR45 Old Style
  • Mikuni HSR48 New Style

Questions & Answers

  • does this choke need a bracket to mount to the carb

    Yes. This assembly threads directly into the body of the HSR series carburetors.

    Answer by: Web Support (Admin) on Feb 9, 2016 10:12:00 AM
  • Looking for the threaded plug only. Is that a optional part to buy? Or do i have to order complete assembly?

    The choke nut is available on its own if you are running a cable operated choke: http://www.nichecycle.com/ncs/categories/carburetor/replacement-parts/640-12001-holder-by-mikuni.html

    Answer by: Web Support (Admin) on Aug 27, 2018 1:44:00 PM
  • What are the dimensions and thread sizes of tm40/07 and tm29/31 choke pumper assemblies?

    The TM39/31 is used with the HSR 42, 45 and 48 carbs. It is much longer than the TM40/07. The dimensions of the TM39/31 is as follows:
    Overall length: 85.57 mm (from top of cap to base of spindle); Outside of screw threads, 11.5mm; Base of thread area to end of spindle (choke fully in): 48.43mm. OD of plunger 7.97mm; Length of plunger: 14.81 (without tip); spindle tip (below plunger) 7.34mm
    The TM40/07 choke assembly is used with the TM36, TM40 and HS40 carbs.The dimensions are as follows:
    Overall length: 59.25 mm (from top of cap to base of spindle); Outside of screw threads, 11.90mm; Base of thread area to end of spindle (choke fully in): 30.41mm. OD of plunger 7.97mm; Length of plunger: 9.73 (without tip); spindle tip (below plunger) 7.1mm

    Answer by: rick c (Admin) on Mar 3, 2020 9:29:00 AM
  • Does this choke stay open by itself? I'm replacing one that does and just want to confirm.

    Yes, the choke remains on/up, until it is manually closed.

    Answer by: Web Support (Admin) on Jul 15, 2020 11:42:00 AM
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Fitment Information

Fitment Information

Mikuni Models

  • Mikuni HSR42 New Style
  • Mikuni HSR42 Old Style
  • Mikuni HSR45 New Style
  • Mikuni HSR45 Old Style
  • Mikuni HSR48 New Style
Product Question

Product Questions

Question will be displayed after moderation.

does this choke need a bracket to mount to the carb
8
Looking for the threaded plug only. Is that a optional part to buy? Or do i have to order complete assembly?
2
What are the dimensions and thread sizes of tm40/07 and tm29/31 choke pumper assemblies?
0
Does this choke stay open by itself? I'm replacing one that does and just want to confirm.
0
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