Why does my 2004 Suzuki Intruder LC 1500 over heat if I go slow?

Question edited for clarity.
Question moved from Suzuki Cars to model category.

SUZUKI VL1500 SERVICE MANUAL Pdf Download

ManualsLib https://www.manualslib.com > ... > VL1500

View and Download Suzuki VL1500 service manual online. VL1500 motorcycle pdf manual download. Also for: Intruder 1500, Vl 1500.

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  Suzuki Intruder 1500 Manuals

  https://www.manualslib.com > ... > Motorcycle
  We have 2 Suzuki Intruder 1500 manuals available for free PDF download: Service Manual, Technische Tekeningen Manual. Suzuki Intruder 1500 Service Manual (410 ...

Suzuki Intruder LC 1500 (VL1500) (1998 - 2005) Clymer

Haynes Manuals https://haynes.com > en-us > intruder-lc-1500-vl1500
Need to service or repair your Suzuki Intruder LC 1500 (VL1500) 1998 - 2005? ... The original Haynes Repair Manual - Based on a complete strip down and ...
US$39.95

https://www.google.com/search?q=2001+suzuki+intruder+1500+starter+solenoid+wiring+diagram

An electrical part is worn causing ovrheatn. Ignition parts need to b tests..coil. Plugcables ignition module or components on alternator. Get a clymer or haynesmanual

Hi.
Not sure if this link will help you out.
https://www.google.com/search?client=avast-a-1&q=How+to+change+spark+plugs+on+a+2004+suzuki+intruder+LC+1500&oq=How+to+change++spark+plugs+on+a+2004+suzuki+intruder+LC+1500&aqs=avast..69i57.18716j0j4&ie=UTF-8

More info is needed about which model intruder you have, 800,1400 etc... Also what do you mean by airflow adjustment. Typically the airflow is fixed and there are ways to adjust fuel flow only.

Drain the engine oil. Remove the case on on the left side of the engine. The stator is inside the case. Be careful with the wires to the stator, be sure the routing is as the existing.

You may need your air filters changed and carbs adjusted. Aso this bike has sort of an afterburner unit which pops off unburned fuel in the exhaust. Some guys remove it and plug the lines.
Intruder Alert Suzuki Intruder and Boulevard Owners Club

05 Boulevard Tune Up Spark Plugs and Air Filter Install

Same problem here

http://www.bikebandit.com/2004-suzuki-motorcycle-vl1500/o/m6819#sch502265

Here is a schematic, parts list, and prices for your 2004 VL 1500. Friction disks wear out and have to be replaced at regular intervals. Clutch slipping is almost always remedied by replacement of the friction disks.

1998 to 2004 is carburators and 2005 up are fuel injected.